Box joints, full pins and project planning

  • Advertise with us

« back to Designing Woodworking Projects forum

Forum topic by ajthomas5009 posted 10-11-2014 11:08 PM 815 views 0 times favorited 3 replies Add to Favorites Watch
View ajthomas5009's profile


296 posts in 1617 days

10-11-2014 11:08 PM

Topic tags/keywords: tip question trick milling joining

Does any know of a simple formula or a chart available that says what the exact pin size, spacing and width of wood needs to insure the piece ends with full pins? For what ever reason it’s always been difficult for me and every time they end up a lil off.

-- Sometimes you're flush and sometimes you're bust, and when you're up, it's never as good as it seems, and when you're down, you never think you'll be up again, but life goes on.

3 replies so far

View DrTebi's profile


265 posts in 3267 days

#1 posted 10-11-2014 11:40 PM

I think it depends a lot on how you cut the box joints.

From what I have gathered, a dado blade adjusted to cut exactly the width you want should make the calculation easier. If you can e.g. adjust your dado blade to cut exactly a 1/2” kerf, then you could base your spacing/pin on that and calculation would be easy.

I have had good luck with a router based box joint jig. I used 1/2” (or other sized-) spacers though, removing one at a time, moving the board after each cut.

View gfadvm's profile


14940 posts in 2690 days

#2 posted 10-12-2014 12:33 AM

Your stock just needs to be equally divisable by the width of the box joint kerfs.

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

View Lifesaver2000's profile


551 posts in 3112 days

#3 posted 10-12-2014 12:47 AM

Just happened to watch the newest episode of The Woodsmith Shop today and they were making box joints. Their suggestion was to just cut the board a little over wide then trim it down after cutting the box joints to get it perfectly even top and bottom. One of those really simple things that had just never occurred to me and I had never seen it suggested in all the videos I have seen on making box joints.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics