Re: new topic: extended x-axis way bars
If you extend the way bars 3-4" (75-100mm) past the end mounting you have room to mount听 a cnc stepper motor while maintaining the center distance.听 I think someone was planning on making 2 piece pens make a mount for the mandrel that screws on directly to the spindle You may have to part a bit off of a few bushings so that you can buy a little space, Live center not sure if using the 2bearing live center is worth the difference in distance between centers.听 All of this should buy听 you the room to turn even El Grande and Cigar pens
Ed Samsen
|
Re: Unimat SL - fret saw attachment
Not to rain on your parade Brian but I have a real, storebought one that came with a bunch of files!听 Bill in Boulder CO USA
toggle quoted message
Show quoted text
On 3/13/19 10:22 AM, Brian Gates briangates@... [UNIMAT] wrote: Or how about an offset overarm that allows the handle to stay on the file Bill? Despite its apparent simplicity, I suspect any of us could spend the rest of our lives tinkering with a filing machine 鈥� one that dispenses with the slide by using Watt鈥檚 linkage (like a beam engine) would be dangerously hypnotic. Then we could use his sun and planet instead of a crank to halve the speed...
Brian
Gillingham (Kent) UK
|
Re: new topic: extended x-axis way bars
Roman:
I
think he meant 12 m Diameter! A very scaled up Unimat.
Carl.
On 3/14/2019 9:52 AM, Roman Gargulak
roman@... [UNIMAT] wrote:
toggle quoted message
Show quoted text
12 m may be a tad long, I think it will sag in the middle
;-)
Roman
On 13/03/2019 7:42 p.m.,
William Macy wmkmacy3@...
[UNIMAT] wrote:
Thanks guys for the good and simple advice. Now to
get rolling and get some 12 m drill rod.
|
Re: new topic: extended x-axis way bars
12 m may be a tad long, I think it will sag in the middle ;-)
Roman
On 13/03/2019 7:42 p.m., William Macy
wmkmacy3@... [UNIMAT] wrote:
Thanks guys for the good and simple advice. Now to get
rolling and get some 12 m drill rod.
|
Re: Unimat SL - fret saw attachment
Hi Neil,
I have a "new in box old stock" cast iron fret saw with the round table original wrapping paper etc.. 听It has never been used and I have owned it for years. 听What do you think it would bring in today's market?
Dick
|
Re: new topic: extended x-axis way bars
Thanks guys for the good and simple advice. Now to get rolling and get some 12 m drill rod.
|
Re: Unimat SL - fret saw attachment
There was a guy on another forum that I am on who did a lot of mods to his Unimat. He used the name Nevada Blue. He used a old drill to jig saw adapter and mounted it on his unimat .听 Here is one on Ebay, they show up on there fairly often. He unscrewed the wooden handle, flipped it upside down, mounted to the unimat so the 3 jaw chunk would spin it. Simple and cheap saw or start for a filer.
|
Re: Another thread question
11/16th is close to 0.690", 0.6875" versus 0.690" . I tried to look up a couple of speciality tap manufacturers and they only list a 11/16 - 40 tpi. This one is marked NS as in Nation Special, time to dig out the old machinist handbooks. Nothing like a odd tap mystery.
听I just did a little more web searching and found out SCSSNER is actually SOSSNER, my bad. Sossner is now SOG Tool.听 听 听They make custom and high end taps including .0005" OS taps. So it is starting to look like Tap #1 was a very special custom tap. I get back from working on a bike tonight, I am going to start digging into what else is in there.听
Jeff
|
Re: Unimat SL - fret saw attachment
Whoops, cross posting 鈥� it looks as if we are on the same page Jeff
听
Brian
听
Sent from for Windows 10
听
|
Re: Unimat SL - fret saw attachment
I抣l see your casting kit Jeff, and raise you a scrap pillar drill, a sewing machine motor and an old Black and Decker jigsaw attachment...
I have a (Chinese) pillar drill with a really sloppy quill that is destined to donate its motor to a Myfordboy power hacksaw as soon as my son抯 welding is up to it, so this might be on the radar instead. Unfortunately he has made it file on the upstroke, but it shouldn抰 be that hard to correct.
Brian Gates
Gillingham (Kent) UK
Sent from Mail<> for Windows 10
From: jeffklender2003@... [UNIMAT]<mailto:UNIMAT@...>
Sent: 13 March 2019 17:12
To: UNIMAT@...<mailto:UNIMAT@...>
Subject: [UNIMAT] RE: Unimat SL - fret saw attachment
How about this kit?
<>
They have nice casting kits that appear to be design for the trade schools.
<>
Jeff
Posted by: jeffklender2003@...
[Non-text portions of this message have been removed]
|
Re: Unimat SL - fret saw attachment
Looking at some of these design, it occurred to me. If you are only doing small items. Then why not use the set of small Swiss "pattern" files. The use a small round shaft ~ 1/8". Some set are double ended and some are single. you could use a cheap wood router table and mount a jig/saber saw under it.听 A little homemade adapter and the saw would hold the Swiss style file. And most of these saw also tilt. Cheap, fast and mostly off the shelf parts. Cheap Router/Jig saw table on Ebay. I see them a lot at garage/estate sale cheap and normally have the router with them selling for less then $20.00
Double ended set
Single
Check Ebay. Prices and Quality vary. But cheap to test and then buy good once you know what you need. 听Jeff
|
Re: Unimat SL - fret saw attachment
Another Die Filer casting kit.
And here is another site for home made one.
Jeff
|
Re: Unimat SL - fret saw attachment
How about this kit?
They have nice casting kits that appear to be design for the trade schools.
Jeff
|
听I recently picked up a small box of items labeled as " Machinist Lot". I have just started going through it and I have found two interesting HSS taps. 听One has this on it:
SCSSNER .690-48 NS HSS PG2
the other has:
GRAND听 11/16-24 NEF HSS GH3 ENGLAND
The second is obviously a old National Extra Fine. The first one is a odd one, I have not seen a tap expressed as .690 before, and this is very close to the diameter of the 11/16, but of a much finer thread. And so the collection grows----- LOL 听Jeff
|
Re: Unimat SL - fret saw attachment
Or how about an offset overarm that allows the handle to stay on the file Bill? Despite its apparent simplicity, I suspect any of us could spend the rest of our lives tinkering with a filing machine � one that dispenses with the slide by using Watt抯 linkage (like a beam engine) would be dangerously hypnotic. Then we could use his sun and planet instead of a crank to halve the speed...
Brian
Gillingham (Kent) UK
Sent from Mail<> for Windows 10
From: Bill Williams BWMSBLDR1@... [UNIMAT]<mailto:UNIMAT@...>
Sent: 13 March 2019 15:55
To: UNIMAT@...<mailto:UNIMAT@...>
Subject: Re: [UNIMAT] RE: Unimat SL - fret saw attachment
Brian, just as an idle thought; has anyone built a filing machine that has an overhead drive? That would allow holding the file by the tang and cutting on the downstroke! Bill in Boulder CO USA
On 3/13/19 3:00 AM, Brian Gates briangates@...<mailto:briangates@...> [UNIMAT] wrote:
From what I have been able to find out machine files are almost impossible to find in the UK, but the Westbury design can use ordinary files at low speeds as well as almost any blades you can make adaptors for. This video shows one in use as well as the holders for conventional files. <> . I抦 not sure I like the look of the large central hole any more than the hole in the table of my fretsaw (into which it tries to pull thin materials), but it does mean that files can be inserted tang-up so that they cut on the down stroke.
All the best
Brian Gates
Gillingham (Kent) UK
Posted by: Bill Williams <bwmsbldr1@...>
|
Re: Unimat SL - fret saw attachment
Thanks Keith, you just reminded me that I wanted to make an insert for my fretsaw that doesn鈥檛 have a giant slot to tilt the table 45 degrees.听 Next time I get it out I will print one.
听
Brian
听
Sent from for Windows 10
听
toggle quoted message
Show quoted text
From: ksangus@... [UNIMAT]
Sent: 13 March 2019 15:25
To: UNIMAT@...
Subject: [UNIMAT] RE: Unimat SL - fret saw attachment
听
听
I would put a counterbore in the hole so I could drop in bushes, maybe wood or plastic, slotted or notched to accept blades and files. You would end up with a drawer full of adapters, and eventually you would have one for every occasion.
听
|
Re: Unimat SL - fret saw attachment
Brian, just as an idle thought; has anyone built a filing machine
that has an overhead drive? That would allow holding the file by
the tang and cutting on the downstroke! Bill in Boulder CO USA
toggle quoted message
Show quoted text
From what I have been able to find out
machine files are almost impossible to find in the UK, but the
Westbury design can use ordinary files at low speeds as well as
almost any blades you can make adaptors for. This video shows
one in use as well as the holders for conventional files. . Im not sure I like the
look of the large central hole any more than the hole in the
table of my fretsaw (into which it tries to pull thin
materials), but it does mean that files can be inserted tang-up
so that they cut on the down stroke.
All the best
Brian Gates
Gillingham (Kent) UK
|
Re: Unimat SL - fret saw attachment
I would put a counterbore in the hole so I could drop in bushes, maybe wood or plastic, slotted or notched to accept blades and files. You would end up with a drawer full of adapters, and eventually you would have one for every occasion.
Keith
---In UNIMAT@..., <briangates@...> wrote : I haven鈥檛 built one Steve, but must admit that I have been researching it (I despair of my filing skills, or rather their absence).听 I鈥檓 holding off right now as my son is shopping for a new lathe, and it would make sense to wait until
that arrives before choosing what tooling to make or buy.听 听 From what I have been able to find out machine files are almost impossible to find in the UK, but the Westbury design can use ordinary files at low speeds as well as almost any blades you can make adaptors for.听 This video shows one in
use as well as the holders for conventional files.听 .听 I鈥檓 not sure I like the look of the large central hole any more than the hole in the table of my fretsaw (into which it tries to pull thin materials), but it does mean that files can be inserted tang-up so that they cut on
the down stroke. 听 All the best Brian Gates Gillingham (Kent) UK 听 听
|
Re: Unimat SL - fret saw attachment
I haven鈥檛 built one Steve, but must admit that I have been researching it (I despair of my filing skills, or rather their absence).听 I鈥檓 holding off right now as my son is shopping for a new lathe, and it would make sense to wait until
that arrives before choosing what tooling to make or buy.听
听
From what I have been able to find out machine files are almost impossible to find in the UK, but the Westbury design can use ordinary files at low speeds as well as almost any blades you can make adaptors for.听 This video shows one in
use as well as the holders for conventional files.听 .听 I鈥檓 not sure I like the look of the large central hole any more than the hole in the table of my fretsaw (into which it tries to pull thin materials), but it does mean that files can be inserted tang-up so that they cut on
the down stroke.
听
All the best
Brian Gates
Gillingham (Kent) UK
听
听
Sent from for Windows 10
听
toggle quoted message
Show quoted text
From: UNIMAT@... on behalf of swoodward1@... [UNIMAT]
Sent: Wednesday, March 13, 2019 8:12:12 AM
To: UNIMAT@...
Subject: [UNIMAT] RE: Unimat SL - fret saw attachment
听
听
Brian,
Have you built one of the Hemingway kits?听 I guess it can all be machined on a Myford and within the home workshop.听 If so this maybe a nice route.听 I notice they are saying you can use it for filing also, but wont you need to use special files in the
device.
This looks like another project to make a project...
Steve
---In UNIMAT@..., wrote :
Cheers everyone,
I wont bother with the unimat attachment.听 and shall pop into Machine Mart see what they have.... it seems to be my favourite shop at the moment......
Steve
---In UNIMAT@..., wrote :
Hi Steve.
Axminster and Scheppach (Machine Mart) both sell scroll saws at that price that have variable speed and holders for pinless blades (my cheaper scroll saw is way too fast for metal cutting and I couldn鈥檛
find decent pin-end metal cutting blades).听 On the plus side, more powerful than the Unimat, greater capacity and a better duty cycle, but on the other hand a scroll saw won鈥檛 hold its value like a Unimat accessory, which if you don鈥檛 like it and sell it on
might only cost you the commission and postage, not 拢150.
It might be worth considering that the scroll saw blade would rock slightly whilst the Unimat attachment moves vertically like a die filer.听 Probably not that great a problem as you would have to clean
up the cut edges anyway.听 If you do buy a scroll saw (when did we stop saying powered fretsaw), make a top for the table to lift the workpiece as cutting thin metal you will only wear out a small part of the blade, and by raising the table you can use the
unworn part.
听
If you also have access to a larger lathe, you could consider one of these perhaps?听
听
All the best
Brian Gates
Gillingham (Kent) UK
听
Sent from for Windows 10
听
听
听
These sell for collector prices. IMO you'd be better off buying a purpose made machine, new or used.
You could even, maybe, get a handheld saw and make a little stand up for it to hold it upside down.
You don't want to machine them with the milling attachment?
Neil
听
|
Re: Unimat SL - fret saw attachment
Brian,
Have you built one of the Hemingway kits?听 I guess it can all be machined on a Myford and within the home workshop.听 If so this maybe a nice route.听 I notice they are saying you can use it for filing also, but wont you need to use special files in the device.
This looks like another project to make a project...
Steve ---In UNIMAT@..., <swoodward1@...> wrote : Cheers everyone,
I wont bother with the unimat attachment.听 and shall pop into Machine Mart see what they have.... it seems to be my favourite shop at the moment......
Steve ---In UNIMAT@..., <briangates@...> wrote : Hi Steve. Axminster and Scheppach (Machine Mart) both sell scroll saws at that price that have variable speed and holders for pinless blades (my cheaper scroll saw is way too fast for metal cutting and I couldn鈥檛 find decent pin-end metal cutting
blades).听 On the plus side, more powerful than the Unimat, greater capacity and a better duty cycle, but on the other hand a scroll saw won鈥檛 hold its value like a Unimat accessory, which if you don鈥檛 like it and sell it on might only cost you the commission
and postage, not 拢150. It might be worth considering that the scroll saw blade would rock slightly whilst the Unimat attachment moves vertically like a die filer.听 Probably not that great a problem as you would have to clean up the cut edges anyway.听 If you do
buy a scroll saw (when did we stop saying powered fretsaw), make a top for the table to lift the workpiece as cutting thin metal you will only wear out a small part of the blade, and by raising the table you can use the unworn part. 听 If you also have access to a larger lathe, you could consider one of these perhaps?听
听 All the best Brian Gates Gillingham (Kent) UK 听 Sent from for Windows 10 听
From: Neil Morrison neilsmorr@... [UNIMAT]
Sent: 12 March 2019 00:37
To: UNIMAT@...
Subject: Re: [UNIMAT] Unimat SL - fret saw attachment 听 听 These sell for collector prices. IMO you'd be better off buying a purpose made machine, new or used. You could even, maybe, get a handheld saw and make a little stand up for it to hold it upside down. You don't want to machine them with the milling attachment? Neil 听
|
Carl
Roman Gargulak
OldToolmaker