Re: [CAD_CAM_EDM_DRO] Re: 3D printer fun with powder

Graham Stabler wrote:

>
> I tried a blade to scrape the roller last night, it is rubber and
> normally used for grouting tiles. I'll try it again with the bigger
> roller (now installed but I'm going out). I'll also try some mylar as
> per Jon's suggestion.
>

The doctor blades on laser printers are very carefully cut so
they leave a .005" or less gap all across the roller. I can't
even begin to imagine how they do this with cast plastic parts
in a mass production factory.

Also, controlling static charges is a big deal. Laser toner is
conductive, so it won't stick where it isn't supposed to. They
have various grounding connections on various things to prevent
parts of the machine from charging where it isn't wanted. If
your powder can charge up, it may be necessary to ground things
to prevent the roller and other parts from picking up a charge.

Jon