Agree on the rotary table as the savings could be spent on a decent chuck and other tooling.

These don't seem too bad on price: http://www.bearingstation.co.uk/prod...ing_Pulley_5mm
I'm guessing the 16mm wide belt is about right? 10mm seems a bit narrow. Only thing they don't show is the maximum bore size. Any idea what size pulley I can go down to on a stepper with an 8mm shaft? I'm guessing about a 12 or 14 tooth to have some meat for the grub screws?