50 hours of tool offsets before I caught my own mistake

I spent about six months setting my tool offsets the same way every time, measuring from the top of the part instead of the machine zero point, and wondering why my first cuts always came out a hair shallow. It finally clicked when my old mentor walked past my machine at Morgan Fabrication and said "hey, why are you zeroing off the stock instead of the table?" Has anyone else spent way too long doing something the hard way before someone just pointed it out?

2 comments

2 Comments

the_xena13d ago

Oh man, I read about this exact thing in a trade magazine once... they called it "datum confusion" and apparently half the guys in the shop have done it at some point. It's wild how one little reference point change can mess with everything downstream. Glad your mentor caught it before you wasted another six months!

the_rowan12d ago

I mean I used to think datum stuff was super overblown but honestly this totally changed how I see it.