I picked up a Biomek 2000 Chemistry plotter to build a 3d printer out of.
I however have no time and need the money now.
The head range is huge 38"wide x 9.5" deep x 8" tall.
with a bowden tip it would probably make a sweet large format printer.
it has it's own steppers and serial interface but could be hacked to run of others.
let me know if your interested. shipped frieght so i will let you know actual shipping. <250$ or pick it up in within 50 miles of salt lake city.