How to change M12 to 1/2″ BSW drawbar thread?

[Enough!Participant @enough]

Posted by Jon on 01/09/2015 21:15:23:

Posted by John Haine on 30/08/2015 22:47:41:

Remember you don't need to tighten the drawbar very much especially for MT collets. A length of studding will be just fine, more than strong enough.

You do I grolly mine up else they drop out or cutter moves.
Have stripped several off the shelf studding welded to drawbars

Sounds like something grossly wrong to me – maybe an inaccurate MT taper somewhere. John is quite right in my experience …. never had to do more than nip up the drawbar either on the lathe, or on mill (when I had an MT setup on it).

Even with the R8 taper I currently have on the mill, I don't tighten it very much. Certainly nothing like enough to strip a piece of studding.

[SteveMParticipant @stevem36008]

Hi Clive and many thanks for the very interesting post on welding. Blimey – that Fronius welder sounds exotic. Apparently it has ' resonant intelligence' which sounds awesome and makes me want one. Even if I wouldn't know what to do with it!

Steve

[Author]

Posts