by drawcut » 2012-Apr-Sun-07-Apr
Thinking about this myself. Actually, I'm thinking about just increasing the Y dimension first. Seems like a lot of things would be longest in one dimension only. Looking around my desk I see my keyboard, a pen, calculator, water bottle - most things seem to have one overall dimension longer than the other two. Expanding just Y would be fairly easy, I'm thinking. Longer wood bed, two longer smooth rods and a longer Y belt. The headed bed is the hardest part but I think an 8 x 8 bed would just fit between the Z rods on a standard PB. The extra 2" in the X would be wasted initially but would allow for future X expansion.
Printrbot original. Major mods: Y axis extended to ~8", Z extended to ~8.5". 5mm SS Z threaded rods w/ flex couplings. E3D hotend. Purchased Acetel gears. Glass bed with Elmers' purple glue stick for most prints. Top of Z axis rods have added cross structure similar to a Prusia i3.