About this 3D model
Springy Corner Bracket Uses custom spring. Springs can be ordered at http://www.ultibots.com/springy-corner-brackets-x4. Version 2 directly couples the heat bed to the corner bracket using Small 3/4" (19mm) Binder Clips. The springs are .600" od x .053" music wire x .500" long, 3.6 coils, closed and ground with a plain finish. The load is 12.4 lbs each.