I design this jig to try heated inserts really.

After I design the jig I came across with this similar (and better executed) design Thing 1306851

3d printed parts

• afila-chisel-1 x 1
• afila-chisel-2 x 1
• afila-chisel-3 x 2
• afila-chisel-4 x 1

Hardware

• Ball bearing 8mm inner diameter x 2
• M3 copper inserts x 6
• M3 bolts x 6
• M4 x 50mm bolt x1