Matt the rollers are machined from aluminium and the bearings I purchased off ebay at a good price, 10mm x 26mm, Not sure about the quality so I purchased 20 of them for about $16 that should be enough for spares plus future projects. The main drive pulley I machined from steel because I never had any aluminium big enough. The 60 grit belts turned up today, unbelievable how quickly they remove material. I watched a couple of these being built on youtube to give me a bit of a heads up and it virtually built itself. Not wrapped in the white paint colour but it was all I had enough of at the time and I'm getting used to it.
Zane