Atom's Parametric Shelf Bracket

Here is a parametric shelf bracket for supporting the corners of shelves using tubing such as conduit or pipe.

I wanted to put together some shelves using the PLEXUS 1 Corner bracket (https://www.thingiverse.com/thing:423965) but I also wanted to use leftover EMT conduit instead of buying more PVC pipe.
This parametric design can be customized for whatever tubing you have on hand and to be as strong as you care to make it.