BaronJ
Grumpy Old Git.
Great design! What is the smallest key way cutter that you have made this way?
The 2 mm one that I'm making at the moment to key the 8 mm diameter holes. I'll post pictures of it when I've got it sorted.
The principle will be the same as the one in the pictures that I posted earlier. I will still use a 10X32 hex grub screw, simply because I have loads of them. But you could use anything you have handy. The only proviso is that it doesn't protrude when the cutter is fully in the slot. With the 8 mm one I should have 6 mm of depth to play with and the grub screws are 6 mm long . I might have to grind a touch off the end.