Ridgid 12" sliding miter saw fence not square.

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Forum topic by Eugd posted 10-02-2016 06:06 PM 2931 views 0 times favorited 2 replies Add to Favorites Watch
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65 posts in 2399 days

10-02-2016 06:06 PM

Topic tags/keywords: question miter saw

I had the saw for about 2 years, and when I got it I made sure that the fence was square to the blade. I used it mostly for doing work around the house molding, casing and cutting down long pieces of wood to manageable sizes. most stuff was square enough for what I was doing. Well as my skills have improved, and learned more about woodworking I was cutting a few wider pieced of wood and noticed that the cut was trailing off to the right as i cut wood on the left side of the saw. I took out a square and the blade was square to the fence on that side. I put a straight edge across the face to see if it was flat and noticed that the strait edge was rocking. I put several different straight edges across the saw to hit both sides and noticed that on the left side the gap was off by 0.23 with a feeler gauge, on the right side off by 0.25 with a feeler gauge. I hit the the left side with about 80 grit sand paper and got it down to flat, and re-squared the blade to the fence but its still cutting a hair off square. on wider pieces its still trailing off a bit when the saw is crosscutting at 90 degrees to the fence. Its visibly off a hair and off when I put a square on the wood sample, it its square on one side but off when the square is put on the other side. I read a few people who have the saw built a sled for it but not sure if I need to do that or build a axillary fence for it and shim it so I can have a straight cut to compensate the trailing off, at least to one side of the saw. I checked the base of the saw and its flat front to back to the fence. Any advice would be greatly beneficial.

2 replies so far

View jerryminer's profile


962 posts in 2729 days

#1 posted 10-02-2016 07:04 PM

0.25” is a quarter of an inch. Did you mean .0025”

Have you tried a new blade? The blade itself might be causing the “trailing off.”

I don’t know that saw, but is there any adjustment in the sliding rails, to take out play?

IMHO, a SCMS can get close, but for precise cuts, I use the table saw with a sled.

-- Jerry, making sawdust professionally since 1976

View Eugd's profile


65 posts in 2399 days

#2 posted 10-02-2016 07:37 PM

Yes, sorry. 025 was off based on the feeler gauge, it’s a new blade but I put on 2 other blades a 80 tooth and the original blade it came with and they all trailed off towards the end of the cut closest to me on wider peices of wood. Now the fence is flat with the straight edge and set up square to the fence, still its off by .0015 when I check it with a feeler gauge when the square is on the side that is slightly off, is that a fine tolerance or am I being critical, I just noticed it after 2 years and not using the saw for any fine woodworking projects at this time but beginning to get into more precise and accurate cuts.

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