1st Build, Steel, Epoxy 24"x24" for Wood

[wallyblackburn]

Initially posted here:
http://www.mycncuk.com/threads/11310...-advice-please

Decided I'm at the point where a build log is in order. Still looking at wood only, but would like to toss 3D carving into the mix. Table is built from 2"x2" square tube steel, 1/8" thick. I will be adding steel strips for more thread engagement where needed.

Ordered linear rails and ballscrews for Y-axis (X-axis?, still haven't figured that out) from Fred at BST. Trying the 20mm Chinese ones. Saving the 35mm NSK surplus ones I ordered before for a later project.

I know I'll get bruised up a bit for this, but I am somewhat "designing as I go". Getting handier with F360 though, so I'll finalize a gantry design before going that far. Here's what I have for now:



Ordering epoxy to provide coplanar place for mounting rails. Gantry thoughts are something similar to what Joe Harris is building. Looking at 1.5kW water-cooled spindle with ER16, 4 bearings, real HY VFD.

Questions:
1. More bracing needed? I am thinking of angled supports for top rails.
2. Any experience with the Chinese rails from BST?
3. What should I be thinking about now to avoid headaches later?

Thank!
Wallace