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Adjusting sled runners.

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Forum topic by Carloz posted 12-30-2016 05:39 AM 380 views 0 times favorited 5 replies Add to Favorites Watch
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Carloz

981 posts in 430 days


12-30-2016 05:39 AM

Did anyone try to use teflon screws or something similar to adjust diy sled runners? Mine either get stuck in the slots or are too loose depending if it rains outside.


5 replies so far

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Rich

1984 posts in 428 days


#1 posted 12-30-2016 06:08 AM

That’s a problem. Reminds me of my experience where two wrongs did make a right. I had build a crosscut sled for small pieces. It was about .0014 inches per inch off square. I was OK with that since they were short cuts, but the sled was super tight, so I used my rabbeting plane to take some width off the runners. I screwed up, and got it too loose.

It worked out though, since, by keeping the sled twisted left, the error went down to nearly zero. I drew a reminder on the fence to keep it torqued that way and never looked back.

Sorry that doesn’t help your situation. If it’s that bad, you might want to invest a few bucks in metal runners that are adjustable.

-- No matter how much you push the envelope, it'll still be stationery.

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Rick_M

10640 posts in 2219 days


#2 posted 12-30-2016 06:51 AM

Yeah if rain is affecting them that much I would switch to steel or plastic. I use both wood and plastic. You might try putting a coat or two of polyurethane on the wood runners, sanding it smooth with 320 or 400, and seeing if that helps.

-- http://thewoodknack.blogspot.com/

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OSB

147 posts in 364 days


#3 posted 12-30-2016 08:28 AM

I haven’t had that problem yet but preparing to align the saw blade on my project saw restoration, I ordered a Microjig Zero play bar set.

They are plastic to resist environmental factors, adjustable width for a custom fit to your miter slot and have a second set of threads so you can square your sled to the table without losing the slot width adjustment.

The first job for mine is to attach it to some wood and then hang a dial indicator off that for blade alignment. The zero play adjustment will give me a very repeatable and accurate result so I should be able to dial in the blade within 0.0005” of parallel to the miter slots.

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jerryminer

811 posts in 1280 days


#4 posted 12-30-2016 08:28 AM

I stopped using solid wood for runners. The last couple of sleds I made, I used baltic birch ply for the runners. they are holding up well, and don’t change dimension with weather changes.

-- Jerry, making sawdust professionally since 1976

View Redoak49's profile

Redoak49

2904 posts in 1827 days


#5 posted 12-30-2016 11:52 AM

I have made the runners from lots of materials and always spent a lot of time fixing them. I now use the Incra miter sliders and the fit is easy.

When I have to make a new sled, I take the miter sliders off the old one and put them on the new one.

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