Chisel Sharpening Jig

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](https://www.thingiverse.com/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