Inner curve on a bowl?

[Tazmaniandevil]

My old Myford doesn't reverse unfortunately. I can use the outboard side of mine for better access though. That helps.

 

[mark sanger]

Hi Drill bit.

In relation to the chuck being rotated in reverse it should be clarified if you have not been involved in turning for long that the thread is designed on most lathes for the wood to rotate anticlockwise and thus locks the chuck onto the thread. If you reverse your rotation then you have to lock off the chuck positively (most chucks have an allen screw to lock it onto the shaft). If you do not do this then the chuck can unscrew from the lathe and you can have an accident getting a chuck in your chest or face.

 

[CHJ]

A valid point Mark, and I would never advocate using a reversed rotation chuck without a locking screw, but in actual practice the worst that normally happens is that the chuck and whatever it is holding falls onto the lathe bed or the floor if the headstock is turned.

Bad enough if fingers are in the way between work and the tool rest as it jacks out but most unlikely to do other than drop.

By its very nature the chuck has to stop turning at speed to unwind.

I've seen it happen on metal lathes where it makes a mess of the tooling as it jacks out but it is stationary whist it is creating havoc.