Request for two small steel rod-esque lathed part!

[HankMcSpank]

Cool - that rig actually looks very good (see what you mean about the 9mm diameter - that'd be fine)

When you mount the larger holder in a chuck, how does it turn overall? In my simplistic head, I just can't imagine that it'd turn 'true' ....as it looks like the opposite part would potentially cause wobble, (ie if it was out of alignment slightly?)

Like I say, I could be wrong!

re measuring those magnets I have...I only own one of those ubiquitous simple digital micrometers (allegedly measuring to 0.01mm accuracy)...it's not the best thing in the world (that said, in the main it suits my simple needs), but they all seem to be coming in at 4.96 - 4.99mm (that variance is more likey to be the inconsistent pressure I'm applying on the micrometer thumbwheel!)...I doubt any would come in over 5mm (on the basis it's cheaper for them to make smaller than larger!) ...& I reckon this simple coil making rig could withstand error of up to .2mm 9ie that's just 0.1mm slack either side of the magnet)