24 Nov
2008
24 Nov
'08
3:28 p.m.
On 24 Nov 2008 at 17:23, William Donzelli wrote:
My thinking is that the drum could be recoated (this
is assuming it is
indeed shot), and using the rigid cast chassis, ground down to a
smooth surface with a custom made tool. This is much like a "poor mans
wheel lathe" used on railroad wheels. As long as the bearings are
still pretty tight, there should be very little wobble between the
drum and chassis. With each head being adjustable for height, much
inaccuracy across the drum becomes fairly unimportant. Inaccuracy
around the drum is more of an issue, but I suspect it will not be too
bad if the correct tool material and magnetic coating is used, and the
drum ground down gently. I will ask my real machinist friends about
the tooling, as I doubt I (or any of us) could make it.
I wonder if the coating could be made from a slow-ish drying binder,
such as polyurethane resin, mixed with the oxide, the drum liberally
coated with the glop and then spun at low speed (horizontally) while
drying to keep the coating a more-or-less uniform thickness.
I don't know if it would work, but it might be worth looking into.
Cheers,
Chuck