Quote Originally Posted by Zeeflyboy View Post
MDF or similar would be ok as long as you aren't using much coolant. If you have any moisture resistant lying around that is a bit more stable in terms of dimensions and changes in humidity etc but far from essential.

You could also just bolt down a small piece where you intend to put your vice, rather than the whole bed. You would just have to re-skim it if you remove it but that's not a big deal for a small piece like that.
That's a good idea. I was planning on keeping the vice at the far left side and leaving the rest available to other projects that I need to do.