Quote Originally Posted by Jonathan View Post
The rails are 600mm long (the above prices are for 700mm just to be safe) which leaves a nice 400mm or so travel.
Do you really need 40cm travel? If you have some specific task in mind that needs it, do it, if not you are seriously weakening the machine for no good reason.

If you are not stuck with 40cm, why not bring the gantry down a foot, then increase the separation on the pillow blocks so you can centre support the rail?