The Home Machinist!

Where are you ? I have a couple of the medium power ones in the shed. I had two big ones (one a true Variac [rtm] and the other that other Co. ) 240 /120 at 25 A that I sold just last year. They have been in the shed for the 23 years since I retired.
...lew...

"DA" was a haircut style. The first thing that comes to mind when I see it. I really hate abbreviations that aren't accompanied by the full description the first time they appear.
...lew...

Using round bars (in a pair of Vs usually) has been used a lot. At least I've made 4 or 5 tooling devices using it with good results.
...lew...

A single "wrap" between the screw is to keep it from being snagged and pulled off. A "mechanical" phenomena not electrical.
...lew...

:-) the quote, < The ship on which I served had amplidynes to control the movement of the main guns.> There is a word I haven't heard since about 1953. :-) the drive for the CPS6B radar set . A monster with 5 one megawatt transmitters and 1, 2 MW one (it was installed while I was working on it) . I ...

Here are a couple of "devices" I built just before a new teacher caused me to depart and then the Covid crap came along when the teacher problem was finally solved , and I never got a chance to try them out in practice . :-) https://i.postimg.cc/pT1gL30p/IMG-0549.jpg https://i.postimg.cc/br7WQkfP/IM...

That video would probably very helpful IF the guy would have talked slow enough to be understood . So many people seem to be practicing to be auctioneers .
...lew...

When I was working as an engineer, it was standard practice for the machinists to deburr each and every surface, and I never observed them deburring raw stock for personal safety. I may have just missed it, or the company order in sufficient quantity that they could get deburred raw stock as a matt...

Back in ancient times there were machines that you stuck the end of a bar into and they centered and drilled it automatically. You could make an end cap on the lathe, stepped to accept the workpiece and the center drill, and use a hand drill to make a centered hole. I did exactly that a few weeks a...

You've just done "line boring" on a simulated Vertical lathe . All that's different is a "steady rest" in place of a tailstock center.
...lew...

Sheech! It's "raw material". Do you expect the steaks from the butcher to be already grilled?
...lew...

They aren't quite as "simple to make" if you cope the ends of cotter to the shaft your clamping. I've done that for the new ones I've made for a Bridgeport quill. I feel that is a better (less marring) thing. It does mean setting up and boring to the right radius.
...lew...