First post!
I've been working on a Cubex Duo printer I bought via ebay, fixing problems, etc. and am now awaiting delivery of the SmoothieBoard controller I ordered for it.
Son of MegaMax has had some recent changes, hopefully improvements-
1) a new heater block on the extruder that uses a cartridge type thermistor.
2) all new balls in the ball nut on the Y axis - it now runs smoother and doesn't make the grinding noises it was making before.
3) adjusted Y axis motor current to eliminate layer shifting (I hope)
4) replaced the printed X axis belt tensioner with an aluminum piece I made yesterday from 1.5 x 2" aluminum tubing.
5) added a UV lamp to the machine for when it's printing fluorescent filament, and installed a switch to switch from white light to UV. The switch is inside the drawer with the controller.