Originally Posted by JewBrew
I plan on doing something similar.
To form the rollers a 6 inch by 3 inch diameter pvc pipe will be fitted with a 3 inch to .5 inch reducer an each end (see pic below) and and have a .5 inch threaded rod centered in the two fittings. Once the form is assembled with the rod in place it will be filled with cement and left to cure. Once cured the pvc mold is cut away leaving a perfectly round roller with a perfectly centered shaft.
Since the PVC pipe is perfectly round and so are the fittings everything is centered.
What do you guys think???
Here is a pic of the reducer from flexpvc.com
The only problem is that PVC pipe is not perfectly round. Might be close enough though, so it's worth a try. OTOH, mills are not all that expensive to buy off the shelf. It's a dollar chasing a dime kind of thing. Not that there's anything wrong with that, ya know.