Fantastic! Thank you so much!

Everything looks very neat and tidy. I was expecting "EPOXY THIS SIDE" scrawled in pencil on the parts, though; I guess you're a lot brighter than I am.

I was a bit surprised to see that the diagonal ribs pieces are square on the ends and the triangle formed filled with epoxy. I'd of thought they'd be pointed to fit into the joint. I suppose it really doesn't matter, as they're gusseted, and epoxy is strong stuff.

One of the many reasons I'm excited to see your build. All I know is aluminum tubing, gussets, and pop rivets.