Re: Mistery Unimat 3 with interesting modifications
Look at the Mini-Mills group, which I own, and can send you an invite to join, if interested. They have a few things about add powerfeeds to mills, which can be applied with a little skull sweat to lathes. They tend to use a coupler that can disconnect the motor from the feed screw when needed for hand positioning. Ought to be some stuff like that in the 7x12 mini-lathe group. I don't think my mini-lathe group has much of that info, but it does have a bunch of modifications for 7x mini-lathes by Ralph Patterson. Some of that might be a good inspiration for you, even though 7x machines are much larger than the Unimats, even the U3.?
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY!
Expect in one hand, expectorate in the other. See which one gets full first.
On Saturday, November 23, 2024 at 10:30:34 AM CST, Julius Henry Marx via groups.io <sawbona@...> wrote:
Hello:
?
@Phill005
... have a Emco power feed ...
?
Yes, so do I.
But it is rather a hassle to use.
Belts (o'rings actually) stretch too easily and slip, interrupting the cut.
Even if you use the right OEM spec. ie: 2-222/N674-70
... drawing up a way of fitting a DC motor ...
Are you looking at a servo motor like those used for turning the U3 to CNC duty?
Or something like a Johnson type RS-555/775/895 with gear reduction?
?
It would have to be an arrangement allowing manual use of the carriage feed when not in use.
?
Best,
?
JHM
?
?
?
?
?
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Re: Mistery Unimat 3 with interesting modifications
Hello:
?
@Phill005
... have a Emco power feed ...
?
Yes, so do I.
But it is rather a hassle to use.
Belts (o'rings actually) stretch too easily and slip, interrupting the cut.
Even if you use the right OEM spec. ie: 2-222/N674-70
... drawing up a way of fitting a DC motor ...
Are you looking at a servo motor like those used for turning the U3 to CNC duty?
Or something like a Johnson type RS-555/775/895 with gear reduction?
?
It would have to be an arrangement allowing manual use of the carriage feed when not in use.
?
Best,
?
JHM
?
?
?
?
?
|
Re: Saw blades for the Emco Unimat jig saw accessory
Saw blades for the Unimat fret saw are available in most big box stores such as Menards and Home Depot. ?Also known as coping saw blades.
Dick
--
http://www.homemadetools.net/forum/?OFF-SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI-LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION
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Re: Mistery Unimat 3 with interesting modifications
Hello Neil:
?
... can't download them?
I received Clive's files but I checked and yours are perfectly accessible.
No problems.
?
Thank you.
?
Best,
?
JHM
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Re: Mistery Unimat 3 with interesting modifications
Hello Clive:
?
Sent!
Yes.
And received perfectly.
Thank you for that.
?
Best,
?
JHM
?
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Re: Mistery Unimat 3 with interesting modifications
Neil,? many thanks for the link to the mags, this is something I have been interested in doing for my U3 that i am restoring although I do have a Emco power feed on mine but you have to change the belt around to change direction so have been drawing up a way of fitting a DC motor to it to get left and right movement, and I also came across another article in one of the mags for fitting a camera to view the lathe whilst working it (eye sight getting as old as me now).
?
Many thanks to all that found this information to help us very pleased.
?
Phill?
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Re: Mistery Unimat 3 with interesting modifications
You can't download them?
Neil
Hi Clive,
I would also be very interested in a copy of these articles if that is possible please?
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Re: Mistery Unimat 3 with interesting modifications
Hi Clive,
I would also be very interested in a copy of these articles if that is possible please?
|
John,
I understand your approach to tooling and that works for you and is great.
I on the other hand enjoy grinding tools and making cutters. Different strokes for different folks. The only cutters I buy are spiral flute end mills and taps& dies.
I also grind my own single flute cutters used for engraving.
Dick
--
http://www.homemadetools.net/forum/?OFF-SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI-LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION
|
Re: Mistery Unimat 3 with interesting modifications
If I've done it right you should be able to download both mags here. If not, I'll have to try again!!
The link expires on Nov 29th.
Julius and John,?
You're welcome to the articles. The PDFs are of individual issues so rather than trying to screenshot the articles it's easier to send the whole issue - who knows; there might be some other articles of interest within the PDFs . . .?
Don't want to sound dense but how do I email individual group members . . . ???
Clive
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Re: Mistery Unimat 3 with interesting modifications
Hello:
?
?
Best,
?
JHM
?
* why can't we be allowed to edit our posts?
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Re: Mistery Unimat 3 with interesting modifications
Hello:
?
?
Best,
?
JHM
?
* why can't we be allowed to edit our posts?
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Re: Mistery Unimat 3 with interesting modifications
Hello:
?
> You're welcome to the articles.
> ... easier to send the whole issue ...
That would be wonderful 8^D !
?
My address is sawbona@....
Thank you very much.
?
Best,
?
JHM
?
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Re: Mistery Unimat 3 with interesting modifications
toggle quoted message
Show quoted text
Julius and John,?
You're welcome to the articles. The PDFs are of individual issues so rather than trying to screenshot the articles it's easier to send the whole issue - who knows; there might be some other articles of interest within the PDFs . . .?
Don't want to sound dense but how do I email individual group members . . . ???
Clive
|
Re: Mistery Unimat 3 with interesting modifications
Julius and John,?
You're welcome to the articles. The PDFs are of individual issues so rather than trying to screenshot the articles it's easier to send the whole issue - who knows; there might be some other articles of interest within the PDFs . . .?
Don't want to sound dense but how do I email individual group members . . . ???
Clive
|
Re: Mistery Unimat 3 with interesting modifications
I would also appreciate a scan.? Thanks for any help
?
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Re: Mistery Unimat 3 with interesting modifications
Hello:
?
On Fri, Nov 22, 2024 at 12:15 PM, Clive wrote:
As luck would have it ...
Indeed ...
... look up those ...
The issue with the "Unimat 3 Split Nut Lead Screw Clutch" article is from 07/2005 (#107 p.44) and issue with the "Friction Dial Handwheels for the Unimat 3" article (photo I posted) is from 02/2006 (#112 p.17).
?
That said: would it be too much to ask for a scan of just those articles?
?
TIA
?
Best,
?
JHM
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Re: Mistery Unimat 3 with interesting modifications
As luck would have it I have MEW in PDF formal - I must look up those issues. Thanks for the heads-up
Clive
Hello:
?
On Fri, Nov 22, 2024 at 08:19 AM, Clive wrote:
... converting it to rack and pinion drive for the carriage ...
It seesm to have been done by a chap called Maurice Rhodes.
Published in Model Engineer Workshop magazine #107 and #112.
The only available source and rather expensive proposition just to have a look and see what it is all about.
?
... that twirling of the leadscrew? handwheel is a nuisance.
To - say - the - least.? 8^¡ã
?
Best,
?
JHM
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In Trade School I learned how to grind a lathe tool free hand on a pedestal grinder. I still use this skill today. We learned to hand grind to within one degree of angle and maintain a single facet. Practice is all it takes. I also was taught how to grind twist drill bits by hand. Learn this skill and you will never need a cutter grinder.
All things are possible!!
Dick
?
?
--
http://www.homemadetools.net/forum/?OFF-SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI-LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION
|
Re: Mistery Unimat 3 with interesting modifications
Hello:
?
On Fri, Nov 22, 2024 at 08:19 AM, Clive wrote:
... converting it to rack and pinion drive for the carriage ...
It seesm to have been done by a chap called Maurice Rhodes.
Published in Model Engineer Workshop magazine #107 and #112.
The only available source and rather expensive proposition just to have a look and see what it is all about.
?
... that twirling of the leadscrew? handwheel is a nuisance.
To - say - the - least.? 8^¡ã
?
Best,
?
JHM
|
Bill in OKC too
OldToolmaker
Alex
