- Joined
- Nov 27, 2012
- Messages
- 7,873
You know, I thought about that before. My theory was that for big lathes, under heavy cuts or interrupted cuts, without a backplate register supporting the chuck, the chuck could get knocked out of alignment. I'm not sure how easy that could happen with just the chuck mounting screws providing the clamping force. But they designed chucks to sit on a register for a reason right?I always wondered why nobody does this on a lathe as it is so simple .
For grinders & small hobby lathes, I assume there wouldn't be enough force to knock a Tap-Tru out of alignment. Maybe a crash or heavy interrupted cut may? I've never had it happen to me but then again the chuck I turned into a Tap-Tru doesn't get used that much.
However, I could of sworn that I once read instructions for a certain brand adjustable chuck that said after you are finished adjusting TIR & tighten down the mounting screws, you then back off the adjustment screws. I've never done it that way on my Set-Tru chucks, I leave the adjustment screws tight. Now if that is indeed the recommended way, then no need to worry about a Tap-Tru getting knocked out of alignment?