Re: Tapping drill chucks for M12x1
Hello Dick: You are right, the body is mild steel where you need to cut. That is how I did the threads on my ER32 Chuck: /g/Unimat/photo/195716/4?p=Name,,er32,20,1,0,0 Carl.
By
Carl
·
#54935
·
|
Re: Tapping drill chucks for M12x1
Hi Carl, I was assuming the chuck body was able to be machined and not too hard. That makes it very doable. Dick
By
OldToolmaker
·
#54934
·
|
Tapping drill chucks for M12x1
Hi Gang: This is almost what I do, the big difference I put a dowel pin in the lathe for the drill chuck to clamp on. If the dowel pin is running true, the clamping surfaces of the chuck are too. Then
By
Carl
·
#54933
·
|
Re: We seem to be thriving!
Hi guys, I think Paul is right, the format and organisation of groups.io certainly helps a lot. Stay safe, James in sunny Fife Sent from my Sony Xperia on the hoof This email contains recycled
By
James Batchelor
·
#54932
·
|
Re: We seem to be thriving!
Keith I think you would be surprised by the number of people visiting this site gleaning great ideas. Just because not everyone contributes, that does not mean it's not appreciated . I'm not into
By
Raymond King
·
#54931
·
|
Re: We seem to be thriving!
Yes, lockdown must be helping, I've certainly done more modelling and lathework in the past few weeks than I normally would. I've even got my airbrush out of storage which hasn't seen the light of day
By
paul b
·
#54930
·
|
Re: We seem to be thriving!
I am one of the new members, though I have been interested in Unimat lathes and machining on a bigger scale for many years. I have noticed an increase in interest in these little lathes and I think
By
Unimat Matt
·
#54929
·
|
Re: Clamping large dia. for centre-drilling
When I got my Unimat SL it had a 3 jaw chuck and a 4 jaw chuck, not self centering. I bought a 10mm drill chuck that had a B2 I believe taper in it. I clamped the drill chuck in the 4 jaw chuck and
By
Les Orton
·
#54928
·
|
Re: Clamping large dia. for centre-drilling
Keith, That sounds like a good method to insure close T.I.R. I have an existing 1/4¡± Emco drill chuck with T.I.R. issues since new back in the fifties or sixties. It is threaded 12mm x1mm and has
By
OldToolmaker
·
#54927
·
|
We seem to be thriving!
Looking at the activity numbers we are having the best month for a good few years now. With everyone being in isolation, shut down, lock up or lock in it's a good job we still have our forum to help
By
Keith S. Angus
·
#54926
·
|
Re: Clamping large dia. for centre-drilling
When I did it I used a tailstock ram with an ER11 collet on it to drill the 11 mm hole - I suppose a drill chuck would do just as well but the sall collets give me more working space. I have a short
By
Keith S. Angus
·
#54925
·
|
Re: Clamping large dia. for centre-drilling
Hi Carl, I have a question for you. When you tapped the drill chucks to M12 x 1mm how did you ensure good concentricity (runout)? Dick
By
OldToolmaker
·
#54924
·
|
Re: Clamping large dia. for centre-drilling
Hi William, Do you have any pictures of the Extended Way Bars. I understand the principle but I would like to see a picture of the extended bars mounted on the Uni. Thanks Dick
By
OldToolmaker
·
#54923
·
|
Re: Clamping large dia. for centre-drilling
Mr. Ayerst, if it would help, I can try to drill this hole in your piece of aluminum if you send ito me. I do not have extra aluminum stock around. This of course is if you are in the US, otherwise
By
John Hutnick
·
#54922
·
|
Re: Clamping large dia. for centre-drilling
Hi Gang: Years ago when I bought my Unimat, 1973, I started acquiring tooling. The first tool everyone with a Unimat should have is the M12x1 tap. This will allow you to make tooling to fit the
By
Carl
·
#54921
·
|
Re: Cap for coal/spring assembly
Hi Brian , Thanks for the tip. I also damaged my cap about a week ago and was thinking of how to get a replacement. After reading your post, I tried it and I have been able to make my own cap. Thanks.
By
Queen Nanu <news@...>
·
#54920
·
|
Re: Clamping large dia. for centre-drilling
You can¡¯t have too many lathes J Regards, Andy Sent: 24 April 2020 08:32 To: Andy Carlson <andycarlson@...>; [email protected] Subject: Re: [Unimat] Clamping large dia. for centre-drilling Thanks
By
Andy Carlson
·
#54919
·
|
Re: Clamping large dia. for centre-drilling
Thanks All. Andy, I have a three jaw chuck, four jaw chuck, catchplate/faceplate + dog and the vertical milling attachment. Unfortunately, no extended way bars. I do have a Proxxon mini pillar drill
By
William Ayerst <willayerst@...>
·
#54918
·
|
Re: Clamping large dia. for centre-drilling
Boring is a good way to make big holes on small lathes but this workpiece is 6 inches long so I would want a fixed steady and possibly also to take the tailstock off. Even then the Unimat might be
By
Andy Carlson
·
#54917
·
|
Re: Clamping large dia. for centre-drilling
Hi Gang: Using the two quills you can only drill 5cm deep. If you clamp the stock to the cross slide you can drill the full travel of the carriage, plus the head stock quill. So the idea is to use the
By
Carl
·
#54916
·
|