This is a project I will soon finish, my printrbot jr. base is warped and is beyond correcting. I also want to make a mounting plate of some sort that makes it more stable and weighs it down. A start to that is connecting pieces to the pre-existing feet... unfortunately they're all different so I have only just finalized the front-right corner.
So far this one printed GREAT and fits PERFECTLY
Made in TinkerCAD
Printed on Printrbot Jr. with .35 mm nozzle, 1.75 mm PLA @ 210 degrees (75 degree heat bed) .3mm layers, 0.9 Extrusion multiplier.
Check back soon!