Finally got electricity run to the bot, so now with power on we have squared the table (Dial indicator photo), built the three layers of the spoilboard, glued the spoilboard layers together, and surfaced the spoilboard.
Hold down is using bolts to the C rails, or a 6"x6" grid of holes with embedded 1/4x20 TNuts. That should provide mounting for most projects. The top two layers are designed to be easily replaced, they bolt on from underneath.
Its been an interesting build, and some of the issues others have experienced and posted to the forum have happened. Comm issues, backlash problems, prox switch issues, etc. I thank everybody for their contributions, they have helped a lot in getting this machine online.
When the lab opens and projects start getting built I plan to post some photos of what is getting built on it.
"The best thing about building something new is either you succeed or learn something. Its a win-win situation."