Re: Thickness reduction
#MODS
Bill
Agree, photos take the guess work?out of explanations
Stay well and safe
John
On Tue, 5 May 2020 at 02:54, Bill in OKC too via <wmrmeyers= [email protected]> wrote: Excellent! Thanks for including the photos. I got the idea from your description, but photos are better. Sometimes my brain sees things that are not, and other times is doesn't see things that are!
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
?On Tuesday, May 5, 2020, 12:16:38 AM UTC, Thmkrl <thmkrl@...> wrote:
?The pics for my previous message
--
John
|
Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
#MISC
Excellent casting work
Thanks for sharing
?
John
On Tue, 5 May 2020 at 05:52, John Dammeyer < johnd@...> wrote: One of our local guys has lost foam with the floating sand bed down to an art form.? He uses his JGRO CNC router to create the patterns out of foam.? And used it for production casting for a while.
I just can't stand the stench.? Another friend brought over both his pattern and some sand and we poured it here.? Very rough but then that's to be expected.? ?But the stench.? And all of the sand smelled after that.
Now for lost PLA, the smell isn't as bad.? But compare that to lost wax casting.? ?The wax is injected into a mold and then pulled out and glued to a tree that has the sprue and runners.? The entire assembly is then dipped multiple times into both a liquid like plaster of paris and held under sifted sand.? Then the whole works is placed into an oven to melt out the wax.? Depending on what is cast it's then taken out almost red hot and the metal is poured.
If it fails it doesn't take long to create a new set of wax models.? A hand carved wax ring or jewelry is different.
Contrast that to PLA.? After 14 hours you have your complex pattern.? Still has those ugly lines on it that 3D printing tends to create.? If it's designed for lost PLA then you coat it in plaster and sand a bunch of times and let that dry.? And then just like lost wax melt it out.? Heat the metal and pour.? And if it doesn't work you have to wait at least another 24 hours before the next model is printed and you figure out what when wrong.? And the oven melting out the PLA better be outside.
But as I showed in the previous photos.? You can make patterns from 3D printed parts.? And if they have draft and you add body filler and prime/paint you end up with a pattern.? ? Or parts like tapered posts from 3D printing.
But we tend to get carried away with 3D printing.? I think I could have made that pattern out of wood faster than the 3D printed version.? But then I also made a 3D printed version as machined to see how things would fit.
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf Of Bill in OKC too via
> Sent: May-04-20 7:16 PM
> To: [email protected]
> Subject: Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
>
> Green sand or Petrobond, no, I can understand why you wouldn't want to mess up your sand. However, there are folks doing it
> with plain sand, aerated with a blower until the pattern is sunk to where you want it, then the blower is shut off, and the sand
> locks the pattern in place. Haven't yet tried it myself, and once I do that may be the last time I try it. But it seems to me it would
> work well for particularly complex objects. Especially for folks who don't have great skills at wood working or pattern making. Like
> me. You do spiffy work, John, but I didn't start where you did, and I'm running out of time if I'm going to do some stuff I want to
> do, so I'm going to at least try some of the newer methods. They may be a waste of time, but maybe not. I'm never going to catch
> up to you anyway, but I may succeed? in some of the things I want to do. And either way, I should learn some stuff, and have some
> fun!
>
> Bill in OKC
>
> William R. Meyers, MSgt, USAF(Ret.)
>
> A human being should be able to change a diaper, plan an invasion,
> butcher a hog, conn a ship, design a building, write a sonnet, balance
> accounts, build a wall, set a bone, comfort the dying, take orders,
> give orders, cooperate, act alone, solve equations, analyze a new
> problem, pitch manure, program a computer, cook a tasty meal, fight
> efficiently, die gallantly. Specialization is for insects.
> LAZARUS LONG (Robert A. Heinlein)
>
>
>
>
>
>
>
>
>
>
>
>
>? On Tuesday, May 5, 2020, 01:42:04 AM UTC, John Dammeyer <johnd@...> wrote:
>
>
>
>
>
>? One of these days I'll get around to casting this mount for my harmonic drive. It pulls from the sand nicely.? Drawn with Alibre
> CAM. Fitted to the motor.? Then tapers and draft added and expanded by 3% for shrinkage.? Sectioned into 4 parts and printed as
> 4 pieces.
> Glued together, body filler, primer and paint.
>
> Absolutely no interest in stinking up my sand with lost PLA process nor lost foam.
>
> John
>
> > -----Original Message-----
> > From: [email protected] [mailto:[email protected]] On Behalf Of Bill in OKC too via
> > Sent: May-04-20 5:47 PM
> > To: [email protected]
> > Subject: Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
> >
> > If I ever get a printer that will print metal objects, I just might do that! My interim plan is to learn to print stuff I can use as
> patterns
> > for sand casting molds. I've got a number of projects hanging fire on my eventually learning how to design stuff for the 3D
> printer.
> > One advantage to doing the plastic patterns is that they can be simpler shapes, with machining done after casting. That can help
> > with making castings with the correct amount of shrinkage in the metal castings. I'm just wondering how many attempts it will
> take
> > to get parts that can be machined to specification. One day I hope to find out!
> >
> > Bill in OKC
> >
> > William R. Meyers, MSgt, USAF(Ret.)
> >
> > A human being should be able to change a diaper, plan an invasion,
> > butcher a hog, conn a ship, design a building, write a sonnet, balance
> > accounts, build a wall, set a bone, comfort the dying, take orders,
> > give orders, cooperate, act alone, solve equations, analyze a new
> > problem, pitch manure, program a computer, cook a tasty meal, fight
> > efficiently, die gallantly. Specialization is for insects.
> > LAZARUS LONG (Robert A. Heinlein)
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >? On Monday, May 4, 2020, 11:26:33 PM UTC, mike allen <animal@...> wrote:
> >
> >
> >
> >
> >
> >? ??? ??? make one with yer printer
> >
> >? ??? ??? animal
> >
> > On 5/4/2020 3:46 PM, Bill in OKC too via wrote:
> > > I downloaded all of them I could find, and ordered the ones that I thought I could actually use in dead-tree versions, too. The
> > only things I didn't order that way are the ones for wiring and motors, as the UK standards are so different from our own. and
> the
> > CNC stuff that I didn't have a real interest in at that time. Didn't get the Unimat books, either, since none of my machines are
> that
> > smal I know I'm a crummy programmer, so I'm trying to stay away from CNC, but I did get a 3D printer, so I'm trying to learn to at
> > least design stuff for the printer. If I ever trip over a Unimat, I know where to get some good books... ;)
> > >
> > > Bill in OKC
> > >
> > > William R. Meyers, MSgt, USAF(Ret.)
> > >
> > > A human being should be able to change a diaper, plan an invasion,
> > > butcher a hog, conn a ship, design a building, write a sonnet, balance
> > > accounts, build a wall, set a bone, comfort the dying, take orders,
> > > give orders, cooperate, act alone, solve equations, analyze a new
> > > problem, pitch manure, program a computer, cook a tasty meal, fight
> > > efficiently, die gallantly. Specialization is for insects.
> > > LAZARUS LONG (Robert A. Heinlein)
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >? On Monday, May 4, 2020, 10:31:05 PM UTC, Bruce J <bruce.desertrat@...> wrote:
> > >
> > >
> > >
> > >
> > >
> > >? I?ve gotten a couple as well. I was just quite surprised to find them on Archive.org?.
> > > On May 4, 2020, at 1:40 PM, Bill in OKC too via <wmrmeyers=[email protected]> wrote:
> > > It's not all of them, but it is all up to #39, which is pretty nice. I've got most of them. You can order them direct from the
> publisher
> > for (last I did it,) about $10-15 each, or though Amazon. I've bought a bunch of them, including both for the 7x mini-lathes, #43 &
> > #48, IIRC.
> > >
> > > Bill in OKC
> > >
> >
> >
> >
> >
> >
>
>
>
>
--
John
|
Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
#MISC
One of our local guys has lost foam with the floating sand bed down to an art form. He uses his JGRO CNC router to create the patterns out of foam. And used it for production casting for a while.
I just can't stand the stench. Another friend brought over both his pattern and some sand and we poured it here. Very rough but then that's to be expected. But the stench. And all of the sand smelled after that.
Now for lost PLA, the smell isn't as bad. But compare that to lost wax casting. The wax is injected into a mold and then pulled out and glued to a tree that has the sprue and runners. The entire assembly is then dipped multiple times into both a liquid like plaster of paris and held under sifted sand. Then the whole works is placed into an oven to melt out the wax. Depending on what is cast it's then taken out almost red hot and the metal is poured.
If it fails it doesn't take long to create a new set of wax models. A hand carved wax ring or jewelry is different.
Contrast that to PLA. After 14 hours you have your complex pattern. Still has those ugly lines on it that 3D printing tends to create. If it's designed for lost PLA then you coat it in plaster and sand a bunch of times and let that dry. And then just like lost wax melt it out. Heat the metal and pour. And if it doesn't work you have to wait at least another 24 hours before the next model is printed and you figure out what when wrong. And the oven melting out the PLA better be outside.
But as I showed in the previous photos. You can make patterns from 3D printed parts. And if they have draft and you add body filler and prime/paint you end up with a pattern. Or parts like tapered posts from 3D printing.
But we tend to get carried away with 3D printing. I think I could have made that pattern out of wood faster than the 3D printed version. But then I also made a 3D printed version as machined to see how things would fit.
toggle quoted message
Show quoted text
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Bill in OKC too via groups.io
Sent: May-04-20 7:16 PM
To: [email protected]
Subject: Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
Green sand or Petrobond, no, I can understand why you wouldn't want to mess up your sand. However, there are folks doing it
with plain sand, aerated with a blower until the pattern is sunk to where you want it, then the blower is shut off, and the sand
locks the pattern in place. Haven't yet tried it myself, and once I do that may be the last time I try it. But it seems to me it would
work well for particularly complex objects. Especially for folks who don't have great skills at wood working or pattern making. Like
me. You do spiffy work, John, but I didn't start where you did, and I'm running out of time if I'm going to do some stuff I want to
do, so I'm going to at least try some of the newer methods. They may be a waste of time, but maybe not. I'm never going to catch
up to you anyway, but I may succeed in some of the things I want to do. And either way, I should learn some stuff, and have some
fun!
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
On Tuesday, May 5, 2020, 01:42:04 AM UTC, John Dammeyer <johnd@...> wrote:
One of these days I'll get around to casting this mount for my harmonic drive. It pulls from the sand nicely.? Drawn with Alibre
CAM. Fitted to the motor.? Then tapers and draft added and expanded by 3% for shrinkage.? Sectioned into 4 parts and printed as
4 pieces.
Glued together, body filler, primer and paint.
Absolutely no interest in stinking up my sand with lost PLA process nor lost foam.
John
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Bill in OKC too via groups.io
Sent: May-04-20 5:47 PM
To: [email protected]
Subject: Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
If I ever get a printer that will print metal objects, I just might do that! My interim plan is to learn to print stuff I can use as patterns
for sand casting molds. I've got a number of projects hanging fire on my eventually learning how to design stuff for the 3D printer.
One advantage to doing the plastic patterns is that they can be simpler shapes, with machining done after casting. That can help
with making castings with the correct amount of shrinkage in the metal castings. I'm just wondering how many attempts it will take
to get parts that can be machined to specification. One day I hope to find out!
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
? On Monday, May 4, 2020, 11:26:33 PM UTC, mike allen <animal@...> wrote:
? ??? ??? make one with yer printer
? ??? ??? animal
On 5/4/2020 3:46 PM, Bill in OKC too via groups.io wrote:
I downloaded all of them I could find, and ordered the ones that I thought I could actually use in dead-tree versions, too. The only things I didn't order that way are the ones for wiring and motors, as the UK standards are so different from our own. and the
CNC stuff that I didn't have a real interest in at that time. Didn't get the Unimat books, either, since none of my machines are that
smal I know I'm a crummy programmer, so I'm trying to stay away from CNC, but I did get a 3D printer, so I'm trying to learn to at
least design stuff for the printer. If I ever trip over a Unimat, I know where to get some good books... ;)
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
? On Monday, May 4, 2020, 10:31:05 PM UTC, Bruce J <bruce.desertrat@...> wrote:
? I?ve gotten a couple as well. I was just quite surprised to find them on Archive.org?.
On May 4, 2020, at 1:40 PM, Bill in OKC too via groups.io <wmrmeyers@...> wrote:
It's not all of them, but it is all up to #39, which is pretty nice. I've got most of them. You can order them direct from the
publisher
for (last I did it,) about $10-15 each, or though Amazon. I've bought a bunch of them, including both for the 7x mini-lathes, #43 &
#48, IIRC.
Bill in OKC
|
Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
#MISC
Green sand or Petrobond, no, I can understand why you wouldn't want to mess up your sand. However, there are folks doing it with plain sand, aerated with a blower until the pattern is sunk to where you want it, then the blower is shut off, and the sand locks the pattern in place. Haven't yet tried it myself, and once I do that may be the last time I try it. But it seems to me it would work well for particularly complex objects. Especially for folks who don't have great skills at wood working or pattern making. Like me. You do spiffy work, John, but I didn't start where you did, and I'm running out of time if I'm going to do some stuff I want to do, so I'm going to at least try some of the newer methods. They may be a waste of time, but maybe not. I'm never going to catch up to you anyway, but I may succeed in some of the things I want to do. And either way, I should learn some stuff, and have some fun!
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
toggle quoted message
Show quoted text
On Tuesday, May 5, 2020, 01:42:04 AM UTC, John Dammeyer <johnd@...> wrote: One of these days I'll get around to casting this mount for my harmonic drive. It pulls from the sand nicely.? Drawn with Alibre CAM. Fitted to the motor.? Then tapers and draft added and expanded by 3% for shrinkage.? Sectioned into 4 parts and printed as 4 pieces. Glued together, body filler, primer and paint. Absolutely no interest in stinking up my sand with lost PLA process nor lost foam. John -----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Bill in OKC too via groups.io
Sent: May-04-20 5:47 PM
To: [email protected]
Subject: Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
If I ever get a printer that will print metal objects, I just might do that! My interim plan is to learn to print stuff I can use as patterns
for sand casting molds. I've got a number of projects hanging fire on my eventually learning how to design stuff for the 3D printer.
One advantage to doing the plastic patterns is that they can be simpler shapes, with machining done after casting. That can help
with making castings with the correct amount of shrinkage in the metal castings. I'm just wondering how many attempts it will take
to get parts that can be machined to specification. One day I hope to find out!
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
? On Monday, May 4, 2020, 11:26:33 PM UTC, mike allen <animal@...> wrote:
? ??? ??? make one with yer printer
? ??? ??? animal
On 5/4/2020 3:46 PM, Bill in OKC too via groups.io wrote:
I downloaded all of them I could find, and ordered the ones that I thought I could actually use in dead-tree versions, too. The only things I didn't order that way are the ones for wiring and motors, as the UK standards are so different from our own. and the
CNC stuff that I didn't have a real interest in at that time. Didn't get the Unimat books, either, since none of my machines are that
smal I know I'm a crummy programmer, so I'm trying to stay away from CNC, but I did get a 3D printer, so I'm trying to learn to at
least design stuff for the printer. If I ever trip over a Unimat, I know where to get some good books... ;)
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
? On Monday, May 4, 2020, 10:31:05 PM UTC, Bruce J <bruce.desertrat@...> wrote:
? I?ve gotten a couple as well. I was just quite surprised to find them on Archive.org?.
On May 4, 2020, at 1:40 PM, Bill in OKC too via groups.io <wmrmeyers@...> wrote:
It's not all of them, but it is all up to #39, which is pretty nice. I've got most of them. You can order them direct from the publisher
for (last I did it,) about $10-15 each, or though Amazon. I've bought a bunch of them, including both for the 7x mini-lathes, #43 &
#48, IIRC.
Bill in OKC
|
Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
#MISC
One of these days I'll get around to casting this mount for my harmonic drive. It pulls from the sand nicely. Drawn with Alibre CAM. Fitted to the motor. Then tapers and draft added and expanded by 3% for shrinkage. Sectioned into 4 parts and printed as 4 pieces.
Glued together, body filler, primer and paint.
Absolutely no interest in stinking up my sand with lost PLA process nor lost foam.
John
toggle quoted message
Show quoted text
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Bill in OKC too via groups.io
Sent: May-04-20 5:47 PM
To: [email protected]
Subject: Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
If I ever get a printer that will print metal objects, I just might do that! My interim plan is to learn to print stuff I can use as patterns
for sand casting molds. I've got a number of projects hanging fire on my eventually learning how to design stuff for the 3D printer.
One advantage to doing the plastic patterns is that they can be simpler shapes, with machining done after casting. That can help
with making castings with the correct amount of shrinkage in the metal castings. I'm just wondering how many attempts it will take
to get parts that can be machined to specification. One day I hope to find out!
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
On Monday, May 4, 2020, 11:26:33 PM UTC, mike allen <animal@...> wrote:
??? ??? make one with yer printer
??? ??? animal
On 5/4/2020 3:46 PM, Bill in OKC too via groups.io wrote:
I downloaded all of them I could find, and ordered the ones that I thought I could actually use in dead-tree versions, too. The only things I didn't order that way are the ones for wiring and motors, as the UK standards are so different from our own. and the
CNC stuff that I didn't have a real interest in at that time. Didn't get the Unimat books, either, since none of my machines are that
smal I know I'm a crummy programmer, so I'm trying to stay away from CNC, but I did get a 3D printer, so I'm trying to learn to at
least design stuff for the printer. If I ever trip over a Unimat, I know where to get some good books... ;)
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
? On Monday, May 4, 2020, 10:31:05 PM UTC, Bruce J <bruce.desertrat@...> wrote:
? I?ve gotten a couple as well. I was just quite surprised to find them on Archive.org?.
On May 4, 2020, at 1:40 PM, Bill in OKC too via groups.io <wmrmeyers@...> wrote:
It's not all of them, but it is all up to #39, which is pretty nice. I've got most of them. You can order them direct from the publisher
for (last I did it,) about $10-15 each, or though Amazon. I've bought a bunch of them, including both for the 7x mini-lathes, #43 &
#48, IIRC.
Bill in OKC
|
Re: Thickness reduction
#MODS
Excellent! Thanks for including the photos. I got the idea from your description, but photos are better. Sometimes my brain sees things that are not, and other times is doesn't see things that are!
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
toggle quoted message
Show quoted text
On Tuesday, May 5, 2020, 12:16:38 AM UTC, Thmkrl <thmkrl@...> wrote:
The pics for my previous message
|
Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
#MISC
If I ever get a printer that will print metal objects, I just might do that! My interim plan is to learn to print stuff I can use as patterns for sand casting molds. I've got a number of projects hanging fire on my eventually learning how to design stuff for the 3D printer. One advantage to doing the plastic patterns is that they can be simpler shapes, with machining done after casting. That can help with making castings with the correct amount of shrinkage in the metal castings. I'm just wondering how many attempts it will take to get parts that can be machined to specification. One day I hope to find out!
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
toggle quoted message
Show quoted text
On Monday, May 4, 2020, 11:26:33 PM UTC, mike allen <animal@...> wrote: ??? ??? make one with yer printer ??? ??? animal On 5/4/2020 3:46 PM, Bill in OKC too via groups.io wrote: I downloaded all of them I could find, and ordered the ones that I thought I could actually use in dead-tree versions, too. The only things I didn't order that way are the ones for wiring and motors, as the UK standards are so different from our own. and the CNC stuff that I didn't have a real interest in at that time. Didn't get the Unimat books, either, since none of my machines are that smal I know I'm a crummy programmer, so I'm trying to stay away from CNC, but I did get a 3D printer, so I'm trying to learn to at least design stuff for the printer. If I ever trip over a Unimat, I know where to get some good books... ;)
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
? On Monday, May 4, 2020, 10:31:05 PM UTC, Bruce J <bruce.desertrat@...> wrote:
? I¡±ve gotten a couple as well. I was just quite surprised to find them on Archive.org¡.
On May 4, 2020, at 1:40 PM, Bill in OKC too via groups.io <wmrmeyers@...> wrote:
It's not all of them, but it is all up to #39, which is pretty nice. I've got most of them. You can order them direct from the publisher for (last I did it,) about $10-15 each, or though Amazon. I've bought a bunch of them, including both for the 7x mini-lathes, #43 & #48, IIRC.
Bill in OKC
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Re: Thickness reduction
#MODS
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Re: Thickness reduction
#MODS
I had some acrylic parts to my 3D printer that were broke when I received it in the mail so I decided to make replacements out of 6061 aluminum. The first pic is the stock piece of aluminum I got which was too thick. After shaping the pieces I routed out the same shape into a piece of 2x8 piece of wood to the same depth as the thickness of stock aluminum? then places the aluminum piece into the recess in the piece of wood as seen in the second pic. Then used my router with a half inch carbide Dato bit to mill down the thickness 1/64 inch at a time. The 3rd pic the square piece at the right shows the original thickness the aluminum stock started at compared to the finished part on the left. The black piece in the middle is the acrylic piece I copied from to make the part. The last 2 pics show the finished pieces.
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Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
#MISC
make one with yer printer
??? ??? animal
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On 5/4/2020 3:46 PM, Bill in OKC too via groups.io wrote: I downloaded all of them I could find, and ordered the ones that I thought I could actually use in dead-tree versions, too. The only things I didn't order that way are the ones for wiring and motors, as the UK standards are so different from our own. and the CNC stuff that I didn't have a real interest in at that time. Didn't get the Unimat books, either, since none of my machines are that smal I know I'm a crummy programmer, so I'm trying to stay away from CNC, but I did get a 3D printer, so I'm trying to learn to at least design stuff for the printer. If I ever trip over a Unimat, I know where to get some good books... ;)
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
On Monday, May 4, 2020, 10:31:05 PM UTC, Bruce J <bruce.desertrat@...> wrote:
I¡±ve gotten a couple as well. I was just quite surprised to find them on Archive.org¡.
On May 4, 2020, at 1:40 PM, Bill in OKC too via groups.io <wmrmeyers@...> wrote:
It's not all of them, but it is all up to #39, which is pretty nice. I've got most of them. You can order them direct from the publisher for (last I did it,) about $10-15 each, or though Amazon. I've bought a bunch of them, including both for the 7x mini-lathes, #43 & #48, IIRC.
Bill in OKC
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Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
#MISC
I downloaded all of them I could find, and ordered the ones that I thought I could actually use in dead-tree versions, too. The only things I didn't order that way are the ones for wiring and motors, as the UK standards are so different from our own. and the CNC stuff that I didn't have a real interest in at that time. Didn't get the Unimat books, either, since none of my machines are that smal I know I'm a crummy programmer, so I'm trying to stay away from CNC, but I did get a 3D printer, so I'm trying to learn to at least design stuff for the printer. If I ever trip over a Unimat, I know where to get some good books... ;)
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
toggle quoted message
Show quoted text
On Monday, May 4, 2020, 10:31:05 PM UTC, Bruce J <bruce.desertrat@...> wrote:
I¡±ve gotten a couple as well. I was just quite surprised to find them on Archive.org¡.
On May 4, 2020, at 1:40 PM, Bill in OKC too via groups.io <wmrmeyers@...> wrote:
It's not all of them, but it is all up to #39, which is pretty nice. I've got most of them. You can order them direct from the publisher for (last I did it,) about $10-15 each, or though Amazon. I've bought a bunch of them, including both for the 7x mini-lathes, #43 & #48, IIRC.
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
On Monday, May 4, 2020, 05:43:45 PM UTC, Bruce J <bruce.desertrat@...> wrote:
On May 4, 2020, at 5:43 AM, Carl Moon via groups.io <carl.moon@...> wrote:
I am working on a project that required 5 mm thick metal plate of aluminium alloy 8090 but my supplier sent me the plates of thickness of 8 mm. I am looking for the best machining option to reduce the thickness of the plates in the workshop itself.
Carl
If all you have is a lathe; depending on the size of the plates, and if you have a lathe faceplate you can make a big flycutter our of it. Mount the work on an angle plate affixed to the cross s lide and you can mill the excess off, slowly.
even simpler one mentioned by Marv Klotz in that thread is here:
There¡¯s also a description of a tool like this in Workshop Practice Series 14
(and Wow! It looks like all the Workshop Practice series are on Archive.org! This is new informnation for me !!!!)
Honestly though I think the quickest resolution could be to complain loudly to your supplier!
--?Bruce Johnson
"Wherever you go, there you are." B. Banzai, PhD
--?Bruce Johnson
"Wherever you go, there you are." B. Banzai, PhD
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Re: Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
#MISC
I¡±ve gotten a couple as well. I was just quite surprised to find them on ¡. On May 4, 2020, at 1:40 PM, Bill in OKC too via < wmrmeyers@...> wrote:
It's not all of them, but it is all up to #39, which is pretty nice. I've got most of them. You can order them direct from the publisher for (last I did it,) about $10-15 each, or though Amazon. I've bought a bunch of them, including both for the 7x mini-lathes, #43 & #48, IIRC. Bill in OKC William R. Meyers, MSgt, USAF(Ret.) A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects. LAZARUS LONG (Robert A. Heinlein) On Monday, May 4, 2020, 05:43:45 PM UTC, Bruce J < bruce.desertrat@...> wrote: On May 4, 2020, at 5:43 AM, Carl Moon via < carl.moon@...> wrote: I am working on a project that required 5 mm thick metal plate of aluminium alloy 8090 but my supplier sent me the plates of thickness of 8 mm. I am looking for the best machining option to reduce the thickness of the plates in the workshop itself. Carl If all you have is a lathe; depending on the size of the plates, and if you have a lathe faceplate you can make a big flycutter our of it. Mount the work on an angle plate affixed to the cross s lide and you can mill the excess off, slowly. ?The even simpler one mentioned by Marv Klotz in that thread is here: There¡¯s also a description of a tool like this in Workshop Practice Series 14 (and Wow! It looks like all the Workshop Practice series are on Archive.org! This is new informnation for me !!!!) Honestly though I think the quickest resolution could be to complain loudly to your supplier! --?Bruce Johnson "Wherever you go, there you are." B. Banzai, PhD
--? Bruce Johnson
"Wherever you go, there you are." B. Banzai, PhD
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Workshop Practice Series, was Re: [digitalhobbyist] Thickness reduction
#MISC
It's not all of them, but it is all up to #39, which is pretty nice. I've got most of them. You can order them direct from the publisher for (last I did it,) about $10-15 each, or though Amazon. I've bought a bunch of them, including both for the 7x mini-lathes, #43 & #48, IIRC.
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
toggle quoted message
Show quoted text
On Monday, May 4, 2020, 05:43:45 PM UTC, Bruce J <bruce.desertrat@...> wrote:
On May 4, 2020, at 5:43 AM, Carl Moon via groups.io <carl.moon@...> wrote:
I am working on a project that required 5 mm thick metal plate of aluminium alloy 8090 but my supplier sent me the plates of thickness of 8 mm. I am looking for the best machining option to reduce the thickness of the plates in the workshop itself.
Carl
If all you have is a lathe; depending on the size of the plates, and if you have a lathe faceplate you can make a big flycutter our of it. Mount the work on an angle plate affixed to the cross s lide and you can mill the excess off, slowly.
even simpler one mentioned by Marv Klotz in that thread is here:
There¡¯s also a description of a tool like this in Workshop Practice Series 14
(and Wow! It looks like all the Workshop Practice series are on Archive.org! This is new informnation for me !!!!)
Honestly though I think the quickest resolution could be to complain loudly to your supplier!
--?Bruce Johnson
"Wherever you go, there you are." B. Banzai, PhD
|
Re: Thickness reduction
#MODS
I am working on a project that required 5 mm thick metal plate of aluminium alloy 8090 but my supplier sent me the plates of thickness of 8 mm. I am looking for the best machining option to reduce the thickness of the plates in the workshop itself.
Carl
If all you have is a lathe; depending on the size of the plates, and if you have a lathe faceplate you can make a big flycutter our of it. Mount the work on an angle plate affixed to the cross s lide and you can mill the excess off, slowly.
?The even simpler one mentioned by Marv Klotz in that thread is here:
There¡¯s also a description of a tool like this in Workshop Practice Series 14?
(and Wow! It looks like all the Workshop Practice series are on ! This is new informnation for me !!!!)
Honestly though I think the quickest resolution could be to complain loudly to your supplier!
--? Bruce Johnson
"Wherever you go, there you are." B. Banzai, PhD
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Re: Thickness reduction
#MODS
How large are the plates? The usual method for reducing thickness is fly milling. If you own a shaper or planer you could possibly use that, as well. Both of those methods work best on relatively small parts. Shapers and planers are considered obsolete in industry, but quite a few hobbyists have them. Bigger pieces, or very much smaller pieces,? might get rolled? to thickness. Shops with limited resources might draw-file or sand the thickness down. More info would help about what you need and what you have to do the work.?
HTH!
Bill in OKC ? William R. Meyers, MSgt, USAF(Ret.)
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)
On Monday, May 4, 2020, 08:55:12 AM CDT, Carl Moon via groups.io <carl.moon@...> wrote:
I am working on a project that required 5 mm thick metal plate of aluminium alloy 8090 but my supplier sent me the plates of thickness of 8 mm. I am looking for the best machining option to reduce the thickness of the plates in the workshop itself.
Carl
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Re: Thickness reduction
#MODS
?
John Lindo?<bechetboat@...>
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Carl.
You forgot to mention the width?and length of?the 8 mm thick plate that needs reducing.
Assuming from the post you do not have a milling machine, but a lathe would?do the job
if the machine is of suitable proportions.
?
John
-- John
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LMS can provide both single and retrofit double lead screw nuts.
They also have telescopic screw covers to keep the chips out of the threads.
Also this side of the pond check out Arc Euro and Amadeal.
Thanks
--
John
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#MODS Single half nut Mini Lathe.
#MODS
LMS can provide both single and retrofit double lead screw nuts.
They also have telescopic screw covers to keep the chips out of the threads.
Also this side of the pond check out Arc Euro and Amadeal.
Thanks
--
John
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Re: Thickness reduction
#MODS
What size plates? Where are you? What do you have available in your shop?
Ralph
I am working on a project that required 5 mm thick metal plate of aluminium alloy 8090 but my supplier sent me the plates of thickness of 8 mm. I am looking for the best machining option to reduce the thickness of the plates in the workshop itself.
Carl
--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer
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Thickness reduction
#MODS
I am working on a project that required 5 mm thick metal plate of aluminium alloy 8090 but my supplier sent me the plates of thickness of 8 mm. I am looking for the best machining option to reduce the thickness of the plates in the workshop itself.
Carl
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John Lindo
Bill in OKC too
