Looking good and professional with that box:)

Two things:

- wouldn't it be better to make the drill guide and tap guide taller so that the drill bit and tap bit are held more securely and wobble less?

- does the grub screw go straight through the guide, chewing into the side of the ali plate or is there a bit of SS which the grub screw pushes from the side and in effect presses against the ali plate?

Regards,
dsc.