CNC pen holder

From the original, aligned holes and added tolerance (0.2mm) so that pen mount slides easier. There are 2 version, 1 larger, where you can add springs, 1 smaller as original.

The original had an M5 bolt on the left and M6 bolt on the right, so i redrew it and made both sides M6.

Otherwise its a really good design, especially the clamp for the router.