First time posting, but look at the forum daily. I decided to try and built a 5' by 14' . Just finish it up (over 2 years to built). It works and runs well. I used linear rail on all axis, jogging speeds of 25 inches/second. I am using a pc router so cut speeds all a lot slower. hope to add a spindle sometime. The vac system is made up of 6 domel 130" motors over 9 zones. now I'm trying to sell my 5' by 12' alpha prt shopbot.