I received my frame pieces yesterday. Nice clean cuts.

I printed a proto-corner for dimension checking and only slight modifications were needed.

Now I have to decide what form of attachment method to use. I came up with a novel idea for keeping the frame together; a channel runs through the corner in an arc and allows for a bungee cord or cable to be run through it. This cabling can be tightened to hold the frame together.

Another way to hold the frame together is using inset nuts and bolts or screw to tighten against the back wall of the channel.

Choices...