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Yes, the 3 has round grooves, the DB / SL / SL1000 V-grooves.

when i needed pulley grooves on the motor i now use on my unimat 3 it was a simple as firing up the motor and attacking the gear on the end of the shaft with a round file until it was deep enough for

You could try something completely different. I actually did this myself on my old south bend lathe. You could mount a router or dremel type tool and put a ball type cutter in it and plunge while

That is true, for sure. And they may have been purchased for one, and used for the other, for that matter. I may never make the set I wanted, since the metal will cost more than a set from HF.? Bill

https://www.harborfreight.com/25-piece-doming-block-and-punch-set-93539.html? though I searched as dapping block set William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live by:Good judgement comes from

They're for making domed shapes in precious sheet metal for jewelry making. One of the many things I intended to make for myself, one of these days. Finally got the lathe in 2008, took until last may

I think it may be unknowable whether these were purchased for jewelry making or machinist inspection purposes. Again, ones that look identical are sold by machinery supply houses.? Refer to the MSC

Another option if you can't shape a cutter.? ?Go to a chain saw shop or dealer and purchase a chain file, they come in various diameters, 3/32 or 1/4" would be good, put them on the tool holder or

A third option would be the "dent balls" used by brass instrument repair folks. They are forced thru a tube to push out dents. They generally don't have the stem that these have, and are frequently

Building the new pulley out of 2 or 3 pieces seems like it might be a good approach. -Guy-

Except not all tooling balls have that shoulder.? Those are sometimes called "shoulder balls". For example:??TE-CO Standard Tooling Balls Slip Fit - 11203 - Penn Tool Co., Inc | | | | | | | | | | |

Thanks Carl. Come to think of I think I’ve seen something similar being used on a television programme we have here in the UK, ‘The Repair Shop’ - people bring old (special to them) things to

They were with an Emco Compact 5 at a local sale room auction here in the UK, if that is any clue. (The lathe went for ~?200 + 38% (auction house charges, VAT etc.). I made one cheeky bid in case it

Hello Peter: They are part of a punching block set: H & H Industrial Products 40 Piece Dapping Die Block & Punch Set 8606-3409 They are similar to tooling balls, that are used for set up work: Te-Co

Doming Punches or Tooling Balls ?

I guess these could be either "tooling balls" or the devices for jewelry making.? Some of them look identical in photos.? I suppose one difference might be how accurately they are ground.? Being

Ah!

I believe these are what are called "Tooling Balls".? They are typically used in the accurate positioning of work pieces.? The shank goes into a hole and then the surface of the ball is used as a

Ah, thanks. Presumably the doming block(s) would be the inverse, and the sheet metal goes in between?

Commonly known as Dapping or Doming Punches...used predominately by the jewellery trades and crafts Regards,Adrian