The Home Machinist!

pete writes: Correct, those collets don't have a tang at all. I'm not all that sure the collets themselves are long enough for those wedges to work, They are not. I use them on my Frankenmill, which has slots. Adding a hole for a drawbar would have required a gun drill and a larger lathe than I have...

Torch wrote: ↑Mon Jan 24, 2022 10:34 am Most MT spindles have a slot in the side. A provided steel wedge is inserted in the slot, resting above the collet and then lightly tapped to dislodge the collet, eliminating the need to hammer on the top of the drawbar.

MT collets don't have tangs.

thunderskunk writes: Bias is accuracy. Linearity is uncertainty of that bias. (Non)linearity is not uncertainty. Like bias it is a systematic error which can, at least in theory, be measured and accounted for. Better to say that precision is uncertainty. BTW ISO now deprecates the use of the word &q...

Do I need special insulated bearings for a 5 hp, 240 volt AC motor that's used intermittently on an air compressor? No. There is nothing in a properly-functioning squirrel-cage motor that would create an electrical path through the bearings. Not in this case but harmonics from a VFD can cause shaft...

My mill has an MT3 taper and I just use MT3 collets to hold tools. I have a large Jacobs chuck with an MT3 shank and also several smaller chucks that can be held in collets.

You do not need insulated bearings for that application.

But it doesn't have to be nearly that pretty (otherwise mine wouldn't work).

I also use bar & chain oil on my Logan lathe and on my Avey/Burgmaster frankenmill (except on the ways for the knee: there I use spray lithium grease).

Use a very thin, stiff gasket material such as printer paper. Leave a lot of overhang on the outside and trim it off after assembly.

A "misting" system I've read about but haven't tried has nozzles designed to prevent the formation of droplets fine enough to float around in the air. Then there's the idea of using compressed air alone. I've also read of the use of chilled compressed air but that seems too complex. I've u...

I sometimes use it (outside); blast it with a spray gun as a degreaser. Follow with compressed air, before the gasoline fully evaporates, works for heavy grime deposits on tractor parts and such. That's just about the most dangerous way to use gasoline as a solvent that I can think of. I sometimes ...

I bought a case of LED tubes and a supply of sockets from 1000bulbs.com and made my own fixtures a couple of years ago. I'm quite satisfied with them. Their 1800 lumen tubes are about $4.00 each.