Hello all. I went out into the shop yesterday to build a miter saw cabinet to get the saw off the floor. I said to myself “Why don’t you check the miter slot to blade parallelism It’s been a while”. It was out by a 1/16! So I get the socket wrench and a dead blow to tap it back in and I don’t have enough adjustment in the trunnion to get it parallel. Lots of head scratching followed by lots of disassembly resulted in the saw top upside down on the base. I cleaned the whole thing and had to grind the trunnions down and enlarge the bolt holes so I would have enough adjustment. I get it back together, flip it over and get it parallel at 90 and it’s out at 45. Some searching on the net told me that the trunnions need to be shimmed away from the top. Specifically the front trunnion needs to be shimmed down. I’m propping the thing up so I have access to the top and bottom and shimming until it works. I’ll get some pictures today so if anyone else has this problem they have some reference before digging in!
Dial indicator with magnetic base attached to my miter gauge. This is the starting point of 90 test.
End point shows blade out .002. That’s as close as I can get it.
Same test with the blade at 45.
End of test shows the blade out of parallel by .014!
This the rear trunnion.
Front Trunnion is hard to see but I’ll have better pictures today.
-- Brain the size of a planet and they have me parking cars.