[GreenKeys] [External] M33 Type drums

[hwhall@aol.com]

 To sidestep the printer resolution, maybe do a silicon mold of the drum, cast a wax (etc.) copy & then use that for a lost wax casting in metal. Or is that double casting process prone to losing fidelity?
WayneWB4OGM
    On Saturday, August 17, 2024 at 08:46:35 PM MDT, Jones, Douglas W via GreenKeys <greenkeys at mailman.qth.net> wrote:   

 From: Tomas Larsson [Tomas at tlec.se] -- Saturday, August 17, 2024 4:18 PM

> Is there anyone out there that has an un-used printer drum for an Model 33.
> The Idea is to scan it and print  it, and the cast in Aluminum or something similar.

I think aluminum would be too soft, but the lost-wax process can be used for much harder metals.  Aluminum bronze comes to mind.

I have no new type drum from a 33, but I can spare a used one if I can get it back.

The resolution of your printing really will matter.  Filament deposition printers rarely have a resolution of 1/10 mm, and I suspect you wat 1/100 mm or even better.  I know that there are scanners and 3D printers with that resolution.  I have a friend who is a jeweler here in Iowa City who has such printers -- used to do masters for lost-wax casting of gold and silver jewelry.

          Doug Jones
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