Pulleys
Pulleys are a super important part of the reprap. Most people fluff over this part it but they can greatly affect build quality because they provide the direct mechanical connection to the X and Y axis. There are 3 type of pulleys: T5, MXL and GT2 that most people use.
Here's some links to sources for GT2 pulleys:
- http://www.beltingonline.com/gt2-2mm-pitch-pulley-20-tooth-c-w-5mm-h7-bore-2-x-m3-g-s-11970
- https://sdp-si.com/eStore/PartDetail.asp?Opener=Group&PartID=60189&GroupID=346
- https://sdp-si.com/eStore/PartDetail.asp?Opener=Group&PartID=8545&GroupID=347
- https://sdp-si.com/eStore/PartDetail.asp?Opener=Group&PartID=22736&GroupID=347
Here's some links to sources for T2.5 pulleys: