[sdiy] Tonewheel relics

[Andre Majorel]

On 2017-10-22 23:31 +0100, Gordonjcp wrote:
> On Sun, Oct 22, 2017 at 09:42:33PM +0200, Rutger Vlek wrote:
> > The gears were made in a molding process, with POM. But they
> > deformed slightly, and the mold was't accurate enough.
> > Normally gears are made with specific tooling, much like
> > wood turning process. However, once you go outside standard
> > 'module' dimensions it no longer works.
> 
> Could you not find someone that can cut them out of nylon?

Why PA ? I thought POM was the best polymer for machining.
Also, PA is hygroscopic so it deforms with ambient humidity.
Probably not a good thing in this application.

Apparently, the gearing is unusual enough that they can't be
machined with standard equipment.

> > I've been told that 3d printed surfaces are too rough for
> > obtaining durable gears...

Wait, are you saying that 3D printing hasn't yet made all other
modes of fabrication obsolete ? Some people would be shocked to
hear that. <g>

-- 
André Majorel http://www.teaser.fr/~amajorel/