Box joint jig key

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Forum topic by IAMike posted 05-01-2014 06:01 AM 1495 views 0 times favorited 5 replies Add to Favorites Watch
View IAMike's profile


26 posts in 1688 days

05-01-2014 06:01 AM

Topic tags/keywords: jig question trick

I am about as new to woodworking as they come, so if this is a foolish idea, let me know. I have been looking at making a simple box joint jig for my table saw, and while wandering the fasteners/etc aisle of my local Menards the other day, I saw some square key stock for like $1.25, and thought, that would probably make a good key/spacer for a box joint jig. Has anyone tried that? Any issues with having hard steel that close to the blade? That was my only concern, really. Otherwise, it’s a temp/humidity stable material that is precise out of the box (or bag, in this case.)



-- I'm thinking about starting a blog for my projects. It'll have to be called Woodworking By Dummies

5 replies so far

View johnstoneb's profile


3060 posts in 2374 days

#1 posted 05-01-2014 10:39 AM

If you want steel that close to the blade go ahead. I wouldn’t use it for that reason alone. A piece of wouthe size you need for a key is going to have no dimensional instability from temp or humidity.

-- Bruce, Boise, ID

View gfadvm's profile


14940 posts in 2891 days

#2 posted 05-02-2014 12:50 AM

I think it would work fine IF it is EXACTLY the width of your dado cut . Not sure how to attach it to the jig base.

It shouldn’t ever be able to get close enough to damage your blade. Those shop made adjustable jigs all use steel for their adjustable “pins”.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View bondogaposis's profile


5091 posts in 2552 days

#3 posted 05-02-2014 01:26 AM

I would feel much safer if the key was brass or aluminum.

-- Bondo Gaposis

View Paul's profile


721 posts in 1766 days

#4 posted 05-02-2014 02:23 AM

For a spacer just flip the first piece you box jointed around 180 degrees and use that first cut as the spacer. It’s the exact width you need every time. No need to over complicate an already semi complex setup and cut.


View woodchuckerNJ's profile


1302 posts in 1835 days

#5 posted 05-02-2014 02:36 AM

Its been done. Made a top tip in Fine Wood working or one of the other magazines a number of years ago.

-- Jeff NJ

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