92Miata
Valuable Member
I agree that he absolutely needs to glue the seams - but the idea that he needs internal bracing is a bit silly. Torsion box designs like this are ridiculously strong, This design is literally orders of magnitude stronger than the black prefab stand pictured above - and much stronger than the typical framed stands everyone seems to love.
In the typical framed stand with a cross beam - the only purpose that cross beam serves is to keep the vertical posts from leaning out - it supports almost no weight - largely because 2x4s bend very easily along that axis.
The biggest weakness with plywood is that it can bend - but building boxes like this eliminates that weakness - because in order for any piece to bend, another pieces has to compress along its length, and wood in general is very strong in that regard.
This is a very strong design. The only issue I have with it is that the left front corner is cut thinner than I'd like. I would add a couple of strips of ply to the inside of that joint - glued and fastened- to essentially make a double-rabbet joint. (http://www.azwoodman.com/box-joints.html for photos of joint types)
Edit:
More plywood stands:
https://www.reef2reef.com/threads/show-me-your-diy-plywood-stands.355388/
In the typical framed stand with a cross beam - the only purpose that cross beam serves is to keep the vertical posts from leaning out - it supports almost no weight - largely because 2x4s bend very easily along that axis.
The biggest weakness with plywood is that it can bend - but building boxes like this eliminates that weakness - because in order for any piece to bend, another pieces has to compress along its length, and wood in general is very strong in that regard.
This is a very strong design. The only issue I have with it is that the left front corner is cut thinner than I'd like. I would add a couple of strips of ply to the inside of that joint - glued and fastened- to essentially make a double-rabbet joint. (http://www.azwoodman.com/box-joints.html for photos of joint types)
Edit:
More plywood stands:
https://www.reef2reef.com/threads/show-me-your-diy-plywood-stands.355388/
Last edited:
