Noticed a huge difference after putting a square on my table saw fence 3 years ago
Back when I started out I just used the tape that came with my saw. Cut was always off by a hair here and there. Finally clamped a 24 inch machined square to my fence and checked every single joint. After that the gaps on my cabinets went from 1/16 inch to almost zero. Took me about 2 hours to dial everything in. Has anyone else tried truing up their fence with just a good square?
@dylan265 been there with that Starrett square, those are solid tools. What gets me is that most folks never think about the fence face itself being warped. I checked my old saw's fence with a straightedge and found a slight bow right in the middle, maybe half a thou off. Clamping a square to a fence that's not dead flat can give you a false reading if you're not careful. Had to shim mine with some aluminum tape before I even started squaring up the blade. It's one of those things that makes you question every cut you ever made before.
Jumped right into that same setup about 2 years ago. I was building a set of wall cabinets and kept getting these tiny gaps at the back corners, drove me nuts. So I clamped my 24 inch Starrett square to the fence and went joint by joint like you said. The biggest thing I found was that my tape was off by about 0.015 from one end to the other, which adds up on long cuts. After resetting everything I could actually push two panels together and feel them click into place with no daylight. Made a huge difference when I was running stiles for doors, no more fighting with the glue up to get things square.