Ok, I guess i will start if off with just a brief list of mods to the machine.
1.) sanding the pipe rails. (this helps with smoothness and cuts on the machine)
2.) I added threaded rod through the sides of the gantry across the the Y-Axis. if i remember right they are 14.5" from the bottom. I also added threaded rod just above the Lower Gantry torsion box the rods go through the gantry sides and also through the X-Axis bearing adjustment box.
Jay "dighsx" added bed rail angle iron to the sides of his and also some straping at the bottom of the X-Axis bearing adjustment block. And he also added a spring loaded leadscrew tensioner. His website www.cncjay.com
http://video.google.com/videoplay?do...50611288533238
3.) bolt the machine down, like all other machines they should be very stable this will help with the jerking of the machine when motors shift travel directions.