Wobbly: my first 3-axis router

[D.C.]

I've seen rails mounted this way. Are there any problems with mounting them vertically?

If you look at the piccy here:
http://www.mycncuk.com/forums/genera...rted-rail.html

Thr red shaded area shows how much load in each direction supportted rail will take. In your situation I think you will be fine, the machine will probably rip through the mdf gantry a long time before you encounter a force that causes a problem with the rails.

Edit to add: You really need to rethink your spindle mount, it is far too weak. You need to make two of them that grip the spindle and put a few inches between them.

Do a google image search for: cnc spindle mount

and you will find plenty of examples to suit all budgets.

[Sodster68]

Thanks D.C.!
Yes, the spindle mount needs improving. The mount in the picture is made of aluminium but I intend to ad a support higher up. Just received my router (with mount) yesterday so I'll start design on the upper support soon.
Cheers
Patrik