Request for two small steel rod-esque lathed part!

[HankMcSpank]

This might help you visualize it...note though, that it's just been lashed up temporarily to photograph for that purpose! (especially the M8 threaded rod aspect!)









Just for illustration (& give some sense of scale), I've placed the magnet in the drill chuck jaw...presently the magnet is 20mm long, but it will need to be cut down in length to be 7 or 8mm.

After I've got the bits needed ...part 1 (as per my sketch further up), will be held by the drill chuck, the 5mm dia magnet will then be placed into part 1's end pocket/recess & part 2 will be forced up against the other end of the magnet (forming a a 'virtual bobbin for the copper to wind back/forward in between)....part 2 will rotate with the M8 threaded rod supported in turn by the bearings you can see in the photo.

I originally thought to use the M8 hex coupler you see in the photo to join part 2 onto the threaded rod, but I guess part 2 itself could have an M8 threaded hole in that end, which would eliminate the need for the coupler - not sure what's easier from a 'making' aspect? (a tapped whole or a 8m rod with an M8 thread cut into it)