lathe steady REST Panova _ New

[Toolmaker51]

Isn't it just coarse feed turning marks? Guess he DIYed the tool out of square stock, turned a taper to it,
then torched the tip and bent it before he finally brazed a carbide tip on it?

Attachment 41232

Ooooooh, the cutter! Little too focused on the work; typical for me.
But DIYSwede has explanation of what is uber plausible. That taper and finish marks fit right in with hand generated cutter movement.

[schuylergrace]

Isn't it just coarse feed turning marks? Guess he DIYed the tool out of square stock, turned a taper to it,
then torched the tip and bent it before he finally brazed a carbide tip on it?

Attachment 41232

I'll bet that's it! The bend threw me for a loop, but you're probably right. I guess I was trying to think too hard about it. I wondered why I smelled bacon burning...

[Saltfever]

Exactly. Prior to this frame you can see the stock is a rough (probably forged) piece of rectangular stock. The arrow points to the square part. He rough turned it because finish is not important. Since it is a short, tapered length, he probably hand-turned it with the compound rest set at the angle. Under those conditions it is difficult to have a smooth, continuous turning motion as you stop to reposition your hand on the handle to complete another turn. Each pause will leave a "spring" mark. If he used a taper attachment then it was set up lose and backlash (or feed rate) is the cause of the rings. Since the pitch of the rings is so consistent I suspect it may have been power driven in some manner.

[hemmjo]

Now off to find a piece of thick wall large diameter pipe!!!! Or, maybe start with a smaller one. Come to think of it, I think I may have a piece of 4" schedule 40.....