Don’t use the Abrasive Cutting Grit granules that are glued to a reamer. The sharp bits can break off in your cork handle and then scratch the crap out of your blank when you slide it on.
Much better to use the rolls of reamer abrasive. I have used 1″ belt sander belts for a big reamer for musky rods. 36 and 60 grit will get it done. Anything finer is too slow.
You can usually find cheap rods at garage sales, Good Will and Salvation Army stores.
Like the Flex Coat video, it’s really slick to have a long reamer on your drill. It really helps to build a reamer that has about the same taper and diameter as the rods you build. Most commercial reamers have too much taper.
Contact cement is the way to go. Epoxy lets go when it warms up during a heavy reaming session.