CHECK to make sure you have continuity(green light) when bit is touched by Zero plate EVERY TIME you Z-Zero!
My spoilboard is a modification of Shopbot's Bill Young's Wedging Top. It allows you to use the full cutting area, and the outside apron is for fences and clamps. Raised area in the middle is the actual 24X18" cutting area, and I will just glue a new piece of MDF down when it gets surfaced to almost nothing.Threaded inserts really helps hold down!
At Shopbot, look at the Buddy's in production...They used to do the same raised cutting area there in Durham.
You have -.5" travel in the X and Y before you hit the prox for your standard X,Y Zeroing routine. I took a screenshot from this laptop which has never been near the machine, so numbers aren't always correct on SB3.
Control computer has never even SEEN the internet
So not really sure where the 8" Z came from....it doesn't hurt anything as the prox stops it.
Good Eyes!
Watch out for the OTHER guy, and safe trip!
scott