[louieatienza]

Thanks guys...

I didn't want to start a debate, but thanks for everyones input.

Being a newbie, I want to research as much as I can before starting my build. I would rather know things before hand and build my machine right the first time.

newpatch

You can use the most ridgid linear rails you can. The limiting factor will be your budget and access to materials and machining. The rails are only as good as the frame you bolt them on to.