Corner Bracket 20x20 - (was) Untested - Now tested.

The idea is to use extruded square aluminium as a frame.

The inner dimension is 20.5. 20 was a little bit too tight.

The screw holes are 5mm you can not use all the holes because they are on the same line but if this is what you want , great.

I trimmed the corner. I rotate the print to the to the trimmed corner to keep the pattern consistent. It also makes that there is no seems that it would crack on(like my first attempt)

I need some suggestions.

**Corner_Bracket_3_corne