OSB for jigs?

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Forum topic by duffmankc posted 04-01-2011 05:42 PM 2458 views 0 times favorited 4 replies Add to Favorites Watch
View duffmankc's profile


14 posts in 2812 days

04-01-2011 05:42 PM

Trying to get my new table saw set up and I want to build a couple of jigs – particularly a crosscut sled and an attached outfeed table (table’s not necessarily a jig, but you get the idea). I have a bunch of OSB lying around, and in general, OSB is much cheaper than plywood or MDF around here. Would OSB be suitable for either of those jigs?
Also, what thickness should I use for the crosscut sled for whatever material you suggest?

4 replies so far

View NBeener's profile


4816 posts in 3349 days

#1 posted 04-01-2011 05:59 PM

I’d use plywood.

Main reason: plywood swells a LOT less in the presence of moisture ….


Meaning … the seasonal changes (swelling/shrinking) will cause much less variation.

For something like a crosscut sled, you really want 90 degrees to MEAN 90 degrees.

I also think plywood is easier to work with, but … that’s really about personal preference, more than anything else.

Good luck !

-- -- Neil

View Cosmicsniper's profile


2202 posts in 3333 days

#2 posted 04-01-2011 06:00 PM

IMHO, OSB is worthless for anything other than wall sheathing. I doubt you could get miter slot runners to run true on a sled made of that stuff.

I’d use decent quality plywood or MDF, especially if the jig requires a bit of trueness to it.

-- jay,

View Rick  Dennington's profile

Rick Dennington

6243 posts in 3369 days

#3 posted 04-01-2011 06:16 PM

+1 for Cosmicsniper;

Don’t even think about using OSB for jigs and fixtures, or an outfeed table, or anything for that matter, other than putting it on a roof or wall. That stuff is crap, will swell up when wet, too rough a texture, and generally not good for anything other than what I mentioned. Like was said above, use a good quality plywood or MDF for the things you want to do…....if you want to use it for something, take it outside, build a fire, and throw it in… burns really good…:))

EDIT: This has got to be an April Fool’s joke…..right? I ain’t falling for it if it is….

-- " It's a rat race out there, and the rats are winning....!!"

View Grandpa's profile


3261 posts in 2850 days

#4 posted 04-01-2011 07:13 PM

MDF and good plywood are more stable when the climate of the room changes. I think you will be far happier with either of these in the future. OSB is too rough and splinters go on forever. I don’t think you will be happy with this decision very long.
When I make jigs I want the very best so it lasts longer and stays straighter

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