Anyone ever change out a cartridge spindle ? I have a Tormach and am considering going from the R8 cartridge spindle to a ISO/CAT 30 taper spindle. Anyone give me any advice on how hard this would be to do ? I looked at my machine and it seems like not a very difficult operation ... Mainly, I would like to do this to allow for building some type of simple ATC later on - I have the Tormach tooling, but from my inspection this system would be hard pressed to work in an ATC.

I also noticed in the Tormach manual they list a BT-30 part number, but it's not anywhere on the website. If the BT-30 spinde is available, would there be any significant disadvantage over the CAT 30 spindle ? (other than that I know the tooling would be much harder to find).

(ANY and ALL input greatly appreciated )