Originally Posted by
Bob Willson
I think I understand what you are saying, however, possibly a better way to go would be to have an individual 10mm thick spindle clamp adapter plate that mounts to the Z spindle plate. This would then give you the best of both worlds.
Alternatively, just make the mounting plate 20mm wider and the clamp that you used as an example would then bolt on from the front using holes tapped into the Z spindle plate.
The example you show does not have to clamp from the rear, it just makes it look prettier if it does. There is plenty of room on the flanges to allow for bolts.