I'm doing this a little backwards. In a perfect world I would procure the bearings first, machine the rollers to dimension, and then put on the knurled finish. But the world isn't perfect and I don't know how long I'll have access to the knurling tool so I did that first. Anyway...first step in reverse is complete...knurled 2" 1018 round stock.
Step two complete. I didn't take a pic of both rollers but they look the same. I got an off center hole drilled into some round stock for the adjuster knobs but haven't turned them down or knurled the yet. Will get back to work on that Monday.
Quick question... How are you locking your adjustment knob? I see what you did. Looks like you took some stock and turned it down and bored an off center hole to carry a bushing. I just don't see any lock for the adjustment.