Trying to make an ultimate sanding drum!

[fatguyslim]

Thanks Jonathan and Tornado, I think I have my answer. Will get a steel bar and knurl it. Do the knurling tools come with various pitches so that I can knurl it in such a way that the protrusions are long a sharpish? Thanks

[T0rnado69]

i think my kit i have has 2 course, 2 medium and 2 fine kurl wheels.
the best one to get it the clamp type, that clamps on top and bottom of the workpiece.
the single wheels ones have to push against the workpiece and can stress the lathe bearings

[fatguyslim]

Can you recommend a course wheels one please? Also can the top and bottom wheels reduce the wobble in my round bar too? Not sure why a think piece of ali is wobbling when it turns?