Not posted any updates for a week or so because I've been going backwards - but that's OK. Gave up with the Melamine wheels and switched to MDF which is featured in this post. Also spent time setting up a sewing machine motor but not enough grunt, then tried a grass trimmer motor, power OK but revs far to high...so for now powering the bandsaw with a Bosch drill. Another thing...I think the skateboard bearings are really to small even for 8”/20cm wheels, might have to visit Schunk in Scoresby.
Bolted both wheels onto the shaft to trim them to same size and minimize radial run out, then put a 5° crown on each one.