Originally Posted by Xnaron  or you could use threaded rod like this... |
I'm wanting to be able to fine tune the adjustments of the bearings so the gantry can be dialed in to be level and squared with the base. After scribbling in my note pad for a couple of minutes, I think what you mention would work.
Drill the holes in the 1" square stock pieces, drop long bolts with a nylon insert nut. Loosen the lower bearings and pull them down as far as they will go, then tighten them back up. Loosen the upper bearings and then start to tighten the long bolts and dial in the gantry, then tighten the upper bearings locking them into place. Loosen lower bearings again and start to tighten the the long bolts until the lower bearings are snug so that there is no free play, tighten the lower bearings down.
I'm going to run with that first, 4 long bolts should still keep that cost under $3. Will be a few days before I can do this.... will post updates once completed.
Thanks for the input.