This accessory is so simple,I'm allmost embarrassed to mention it,but,if there's anyone out there like me,I'm sure they'll hit their heads with the heel of their hand,and say "damn!,why did'nt I think of that"?When working as a machinist,every lathe had a 'Chuck board'.This was a piece of board,or plywood that was placed over the bed underneath the chuck,it had a piece of wood attached to each side of the board,It's purpose was to protect the bed(and to an extent the fingers) when chucks were being changed.I realise that most of the lathes us amateurs own are small,and the chucks not that heavy,but for larger lathes,it is most definately very usefull,or even where someone has a condition that weakens hands,or wrists,such as arthritis.