Posting here as there seams like no other place for me Rivett 2010 tool room lathe. I am wondering if anyone here has this model lathe? It has a collett closer which is tightened by spanner on the rear. I figured that out ok, Then on the back there is a wheel coming of of spindle shaft, Can't figure what it does, any ideas? Also I can't find a operating manual, any help here? Thanks Stan