I printed Kanrog's frame, and when I got my bed spring kit, the M4 bolts were flathead, not hex head. Another “wait, what's standard?!” moment!

I remixed the frame with countersunk holes to keep the heads below the flat mating surface, with recesses underneaths for nuts (which protrude a bit because I wanted to keep the thickness of the frame). 

I redid the corners slightly to accommodate sharp cornered glass and to help snap in a 120mm square.

I'm currently running it with a dummy PETG printed bed to get the printer running :o  I won't have time to get a sheet of glass this week and a heated bed kit is on the way, and I wanted to see how janky I could be in the mean time. It works! 

I think I printed the frame in ASA but it might be PLA pro/plus/etc.