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I made a tool like this for undercutting a ring I was machining off an 8" diameter bit of aluminium - obviously it was all much bigger than a Unimat. I also cut some Vee groove pulleys on a big

I was not as sophisticated as any of this.? I took a 1/4" pointed nose carbide tool and cut a groove that works well enough with an O-ring.

Yes, one could say that, but by convention, one does not normally use the metric prefixes when talking about temperature. As I mentioned, I can easily build a glass tube mercury thermometer to measure

That's fine for a V belt.? But I think the original poster is making a pulley for an O-ring belt which has a round cross section. Charles E. "Chuck" Kinzer

This video explains my previous message well: https://youtu.be/e4apNy_2AB8?si=ylGnAx0OdFzNYA_C

Do you have the compound/taper attachment for your U3? If so there is a very easy way to cut a V. Using a parting tool cut into the pulley to the depth required. Then set the compound to feed into the

Very nice Carl, thanks for the link. Just a very brief view of your workshop though… Twenty years or so ago we watched (rather the worse for wear after an ‘occasion’ the night before) all day

On reflection, I think it was ‘the nut between the chair and keyboard’, which makes much more sense and is closer to your definition :-)

Neat! Get Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ Sent: Sunday, September 17, 2023 10:10:17 AM To: OldToolmaker <old_toolmaker@...>; [email protected]

Try this link: https://www.youtube.com/watch?v=rsCy7s-mP1U&t=29s

If you intend using the machine as a drill press and aren't drilling deep holes, then yes it's a worthwhile addition. Other than that it has no use. Paul B.

Nice display with big numbers. I like it. Get Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ Sent: Saturday, September 16, 2023 11:44:21 PM To: Tamra

Hello Carl! I don’t have a Facebook account so was unable to view your shop and railroad pictures. -- http://www.homemadetools.net/ forum/ OFF- SET-tailstock-center-65965#post105972

For Computers I thought it was the "Keyboard / Chair Interface Unit" cause all the problems.

Hi Bill: You are right, fancy machines, usually those with CNC, change speed with diameter. It can be part of the program. And in production, time matters. The valve seat we were grinding, they

Jerry, can you not say essentially the same for fahrenheit? It is repeatable, and consistent. Freezing is not zero only because the medium for freezing was shifted from a specific saline solution to

The formula we used at school is rpm=SPM/d*4.? For aluminum, SPM is 400-1000 from a chart, 38mm is 1.5" approximately, and back in the day it was π or 3.14159 or however many decimals you cared to

Carl, Thank you for the feedback, so I wont be wasting any money on that. Dave

Hahaha...? I worked in IT for many years, both in the commercial world and in education... Many of the issues raised by 'clients' were found to be due to 'the nut behind the keyboard'? :-)

Bill, thanks for your kind words. I’m sure you are doing far better than you think you are! ?Life long learning eh? Lovely graphic Mike, and I’m sure it would be an improvement but I don’t have