I use a ground block(jo-block, 1-2-3 block) on top of any fixed surface on the table--I have a ground block that I can bolt to the tee slot, or I just use the back of the fixed jaw of a vise. I set all of my tools once (the same 7-15 tools that I use on almost every job), and whenever I am using my edgefinder(also a dedicated tool) to pickup my work fixture x and y, I slap a .0005" dial indicator and measure the distance from the top of my pickup block to the top of my work surface and wallah--G54,G55, etc. Z offset. This works great--I can have several jobs setup in the machine at the same time, even with the same vise, and never have to change my TLO (except to compensate for tool wear).

I have the same problem--right click the chain I want to change, then reverse or change side, and all chains are affected--very frustrating--what gives?

Does anyone know if Mastercam has a metric tap library? If so, where/how can I get it? Rottncf [ 11-22-2001: Message edited by: rottncf ] [ 11-22-2001: Message edited by: rottncf ]