|
Loaded into the Files section photos of my 3D printed Fractal vice.
From the original designer the acid test seems the vice gripping an adjustable wrench.
See last photo of me lifting the vice off the bench by the wrench.
Works OK, and strong enough for wood working applications and even a light milling job.
A very well designed project and full marks to Prusa Printables for the STL downloads.
I used PLA impregnated filament,?
Attached is a pdf with links to explain the original uses of this steel tool and how one was repaired.
Through my life in engineering, I have never used such a work holding tool.
Hope of interest?
--
John
|
Thanks John, that is so cool, definitely putting one or maybe two on my list.
Ralph
Loaded into the Files section photos of my 3D printed Fractal vice.
From the original designer the acid test seems the vice gripping an adjustable wrench.
See last photo of me lifting the vice off the bench by the wrench.
Works OK, and strong enough for wood working applications and even a light milling job.
A very well designed project and full marks to Prusa Printables for the STL downloads.
I used PLA impregnated filament,?
Attached is a pdf with links to explain the original uses of this steel tool and how one was repaired.
Through my life in engineering, I have never used such a work holding tool.
Hope of interest?
--
John
--
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
|
If ya don't have time to make one or two there's always Amazon
animal
On 2/21/24 9:42 AM, Ralph Hulslander
wrote:
toggle quoted message
Show quoted text
Thanks John, that is so cool, definitely putting
one or maybe two on my list.
Ralph
Loaded
into the Files section photos of my 3D printed Fractal vice.
From the original designer the acid test seems the vice
gripping an adjustable wrench.
See last photo of me lifting the vice off the bench by the
wrench.
Works OK, and strong enough for wood working applications and
even a light milling job.
A very well designed project and full marks to Prusa
Printables for the STL downloads.
I used PLA impregnated filament,?
Attached is a pdf with links to explain the original uses of
this steel tool and how one was repaired.
Through my life in engineering, I have never used such a work
holding tool.
Hope of interest?
--
John
--
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
|
Hi Mike
Thanks for that, I did not know they were commercially available, first produced I think around 1940??s.
I watched a You tube on repairing one and for an engineering project I was thinking of maching one from scratch in mild steel?
and the final small jaws that actually do the gripping using Silver steel (drill rod) and hardening/temper.
The basic engineering "method" for me would be to make the base vice, just normal standard milling from bar stock
or even find a cheap cast iron drill press vice and modify it.
The actual swivel jaws would need to be a combination of either lathe faceplate and or CNC milling and jig boring, again not really a problem.
My concern over the past few weeks thinking about this new project is the cutting of the male and female tenons that stop the jaws from falling out,
as they should "slot into each other by swivelling in place"
The 3D printing did an excellent job of this, but to conventional machine these tenons would be tricky.
It would require an awful amount of dedicated tooling, once used then it?s a throwaway as i would only make one vice to hold the parts. even?
using a special double tipped dovetail boring bar. you could not use a standard milling dovetail cutter indexing the part on a 4th axis head I think I am correct in this.
I refer back to mikes link of commercial unit for sale $$$$$$$ and I notice when zooming in there are no dovetails, the connecting lips look flat, so how do the jaws stay in place?
Any forum members are welcome to offer there opinions on this feature, as if NO dovetail tenons are required, than the manufacture is doable without a lot of sweat.
Thanks
--
John
|
The photo shows the commercial one does have dovetail joints.? ? 
? I’d build a special clamping feature to hold them on the 4th axis and just use a dovetail cutter to cut the outer grooves as the 4th axis turned.? For the For the inner grooves clamped into a fixture but this time on the lathe and a specially formed tool to cut the mating groove since now it’s just like a thread from the perspective of an internal channel. ? If the fixture blocks are designed to not be square but rectangular then it may well be possible to mount it centered on the lathe and depending on which side the part is clamped the actually machining is pretty simple.? Same with the 4th axis. ? I could also just be under thinking it. John Dammeyer ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of John Lindo
Sent: February 22, 2024 8:34 AM
To: [email protected]
Subject: Re: [digitalhobbyist] #3D Fractal vice.? Hi Mike
Thanks for that, I did not know they were commercially available, first produced I think around 1940??s.
I watched a You tube on repairing one and for an engineering project I was thinking of maching one from scratch in mild steel?
and the final small jaws that actually do the gripping using Silver steel (drill rod) and hardening/temper.
The basic engineering "method" for me would be to make the base vice, just normal standard milling from bar stock
or even find a cheap cast iron drill press vice and modify it.
The actual swivel jaws would need to be a combination of either lathe faceplate and or CNC milling and jig boring, again not really a problem.
My concern over the past few weeks thinking about this new project is the cutting of the male and female tenons that stop the jaws from falling out,
as they should "slot into each other by swivelling in place"
The 3D printing did an excellent job of this, but to conventional machine these tenons would be tricky.
It would require an awful amount of dedicated tooling, once used then it?s a throwaway as i would only make one vice to hold the parts. even?
using a special double tipped dovetail boring bar. you could not use a standard milling dovetail cutter indexing the part on a 4th axis head I think I am correct in this.
I refer back to mikes link of commercial unit for sale $$$$$$$ and I notice when zooming in there are no dovetails, the connecting lips look flat, so how do the jaws stay in place?
Any forum members are welcome to offer there opinions on this feature, as if NO dovetail tenons are required, than the manufacture is doable without a lot of sweat.
Thanks
--
John
|
Here is a link for a 1923 American Machinist commercial Fractal Vise also known as a Mantel Vise (why a Mantle Vise? - it was made by Mantle & Co of New York, NY) :
It was invented by Paulin Kunze - an Austrian.
On Thu, Feb 22, 2024 at 9:30?AM John Dammeyer < johnd@...> wrote: The photo shows the commercial one does have dovetail joints.? ? 
? I’d build a special clamping feature to hold them on the 4th axis and just use a dovetail cutter to cut the outer grooves as the 4th axis turned.? For the For the inner grooves clamped into a fixture but this time on the lathe and a specially formed tool to cut the mating groove since now it’s just like a thread from the perspective of an internal channel. ? If the fixture blocks are designed to not be square but rectangular then it may well be possible to mount it centered on the lathe and depending on which side the part is clamped the actually machining is pretty simple.? Same with the 4th axis. ? I could also just be under thinking it. John Dammeyer ? ? Hi Mike
Thanks for that, I did not know they were commercially available, first produced I think around 1940??s.
I watched a You tube on repairing one and for an engineering project I was thinking of maching one from scratch in mild steel?
and the final small jaws that actually do the gripping using Silver steel (drill rod) and hardening/temper.
The basic engineering "method" for me would be to make the base vice, just normal standard milling from bar stock
or even find a cheap cast iron drill press vice and modify it.
The actual swivel jaws would need to be a combination of either lathe faceplate and or CNC milling and jig boring, again not really a problem.
My concern over the past few weeks thinking about this new project is the cutting of the male and female tenons that stop the jaws from falling out,
as they should "slot into each other by swivelling in place"
The 3D printing did an excellent job of this, but to conventional machine these tenons would be tricky.
It would require an awful amount of dedicated tooling, once used then it?s a throwaway as i would only make one vice to hold the parts. even?
using a special double tipped dovetail boring bar. you could not use a standard milling dovetail cutter indexing the part on a 4th axis head I think I am correct in this.
I refer back to mikes link of commercial unit for sale $$$$$$$ and I notice when zooming in there are no dovetails, the connecting lips look flat, so how do the jaws stay in place?
Any forum members are welcome to offer there opinions on this feature, as if NO dovetail tenons are required, than the manufacture is doable without a lot of sweat.
Thanks
--
John
--
Buffalo John
|
There is a teardown and repair of one on U tube.
?
There are definitely dovetails on that one.
At least some of the male dovetails are separate pieces, screwed into the piece behind it.
?
?
?
?
R.J. (Jim) Klessig, P.E.
Senior Power Systems Engineer
?
Electrical Reliability Services, Inc.
1876 Gwin Rd, Mckinleyville, CA? 95519, USA
O 707-616-5509|
|
?
CONFIDENTIALITY NOTICE: This e-mail and any files transmitted with it are intended solely for the use of the individual or entity to whom they are addressed and may contain confidential and privileged information protected by law. If you received this e-mail
in error, any review, use, dissemination, distribution, or copying of the e-mail is strictly prohibited. Please notify the sender immediately by return e-mail and delete all copies from your system.
-- Jim Klessig
|
Jim
Thanks for the information.
Certainly more food for thought.
I think most of the jaw work can be done on conventional mills and lathe faceplate work, using
some dedicated tooling to hold the parts for eccentric work.
Some profile parts can be machined as "rings" and then cut in half, faced back to half moons with a face mill.
Good swan necked dovetail groove boring tools will be paramount, not an problem to make from drill rod and then harden/temper.
Anyway, I am going to give it a go this summer. it took me 5 years of continual work to build a working model steam tractor, this should be?
a 1 year project? I think. ????
--
John
|
Forgot to add, the downloaded Josef Prusa Printables info contains a full set of STEP files,?
I like the overall size of the 3D printed model, so dimensionally I will not need to scale when
making a steel version.
if necessary I can convert these STEP?s to Mastercam files MC and use to CNC program cutting/profiling the parts that way similar to the video.
--
John
|
Only a year you think…..? ;-) ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of John Lindo
Sent: February 26, 2024 8:32 PM
To: [email protected]
Subject: Re: [digitalhobbyist] #3D Fractal vice.? Jim
Thanks for the information.
Certainly more food for thought.
I think most of the jaw work can be done on conventional mills and lathe faceplate work, using
some dedicated tooling to hold the parts for eccentric work.
Some profile parts can be machined as "rings" and then cut in half, faced back to half moons with a face mill.
Good swan necked dovetail groove boring tools will be paramount, not an problem to make from drill rod and then harden/temper.
Anyway, I am going to give it a go this summer. it took me 5 years of continual work to build a working model steam tractor, this should be?
a 1 year project? I think. ????
--
John
|
John Lindo, Where did you find the 3d files for the?Fractal vice by Josef Prusa? I can find other makers, but not his. Thanks.
Jim Klessig, I cannot see the middle two pictures. Am I the only one or has the latest "issue" of pictures not being seen on multiple sites struck here too?
Thanks,
Ron
|
Hi Ron
Try this
180109-fractal-vise-4c544fff-f4a6-4205-bdb0-de77e55aa375.pdf
Cheers
On Tue, 27 Feb 2024 at 12:50, Ron Y < ryulick@...> wrote: John Lindo, Where did you find the 3d files for the?Fractal vice by Josef Prusa? I can find other makers, but not his. Thanks.
Jim Klessig, I cannot see the middle two pictures. Am I the only one or has the latest "issue" of pictures not being seen on multiple sites struck here too?
Thanks,
Ron
--
John
|
toggle quoted message
Show quoted text
Hi Ron
Try this
180109-fractal-vise-4c544fff-f4a6-4205-bdb0-de77e55aa375.pdf
Cheers
On Tue, 27 Feb 2024 at 12:50, Ron Y < ryulick@...> wrote: John Lindo, Where did you find the 3d files for the?Fractal vice by Josef Prusa? I can find other makers, but not his. Thanks.
Jim Klessig, I cannot see the middle two pictures. Am I the only one or has the latest "issue" of pictures not being seen on multiple sites struck here too?
Thanks,
Ron
--
John
--
Buffalo John
|
Ron Wrote
“I cannot see the middle two pictures.”
?
Yeah, I can’t see them either in the email digest view.
But they are there if I
“view” on line.
They are just somewhat fuzzy zooms of some of the disassembly video.
?
?
?
R.J. (Jim) Klessig, P.E.
Senior Power Systems Engineer
?
Electrical Reliability Services, Inc.
1876 Gwin Rd, Mckinleyville, CA? 95519, USA
O 707-616-5509|
|
?
CONFIDENTIALITY NOTICE: This e-mail and any files transmitted with it are intended solely for the use of the individual or entity to whom they are addressed and may contain confidential and privileged information protected by law. If you received this e-mail
in error, any review, use, dissemination, distribution, or copying of the e-mail is strictly prohibited. Please notify the sender immediately by return e-mail and delete all copies from your system.
-- Jim Klessig
|
John, you need to activate?your Link.??
Hi Ron
Try this
180109-fractal-vise-4c544fff-f4a6-4205-bdb0-de77e55aa375.pdf
Cheers
On Tue, 27 Feb 2024 at 12:50, Ron Y < ryulick@...> wrote: John Lindo, Where did you find the 3d files for the?Fractal vice by Josef Prusa? I can find other makers, but not his. Thanks.
Jim Klessig, I cannot see the middle two pictures. Am I the only one or has the latest "issue" of pictures not being seen on multiple sites struck here too?
Thanks,
Ron
--
John
--
Buffalo John
--
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
|
If that was meant for me, I'm not sure what you mean. If I press the link I see:
I'm not logged in and that is what I see...
John, you need to activate?your Link.??
Hi Ron
Try this
180109-fractal-vise-4c544fff-f4a6-4205-bdb0-de77e55aa375.pdf
Cheers
On Tue, 27 Feb 2024 at 12:50, Ron Y < ryulick@...> wrote: John Lindo, Where did you find the 3d files for the?Fractal vice by Josef Prusa? I can find other makers, but not his. Thanks.
Jim Klessig, I cannot see the middle two pictures. Am I the only one or has the latest "issue" of pictures not being seen on multiple sites struck here too?
Thanks,
Ron
--
John
--
Buffalo John
--
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
--
Buffalo John
|
I think this should work.
Cheers
--
John
|
thanks John , so another rookie ? When these projects show up are
they pretty much setup with everything all the best settings
possible ? Or is there always something that the printer
owner/user? has to adjust for ? Next ? would be how do ya know
what to change or adjust ?
thanks
animal
On 2/27/24 8:41 PM, John Lindo wrote:
toggle quoted message
Show quoted text
I think this should work.
Cheers
--
John
|
Next question , if a guy'gal wanted to cast these parts would
these printed parts be ok to use for molds ?
thanks
animal
On 2/27/24 8:41 PM, John Lindo wrote:
toggle quoted message
Show quoted text
I think this should work.
Cheers
--
John
|
Mike I think the parts (STL) files would need to be converted to a STEP file format, from there each?part would have to have a draft angle 3-5 degrees ? added to allow the castings to slip out the molds. This would then need each part to be machined. You could resin print as opposed to 3D print using the original STL files. Cheers
On Wed, 28 Feb 2024 at 06:00, mike allen < animal@...> wrote:
Next question , if a guy'gal wanted to cast these parts would
these printed parts be ok to use for molds ?
thanks
animal
On 2/27/24 8:41 PM, John Lindo wrote:
I think this should work.
Cheers
--
John
--
John
|
John Lindo
BuffaloJohn