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

Some of the rollers are polished and very flat.

I was thinking about the toner roller because with the developer iron
filings it does act like a true brush, and the angle of the fillings is
effected by the magnet inside the roller. In a copier they stand up in the
toner, fill with toner, then lay flat as they exit the toner hopper to stand
up on the other side and present the toner. But this ability to make the
filings stand up just where required on the roller may make it better able
to brush your powder forwards. At one angle the fillings would lift the
powder from the surface carrying them up on the roller, and another set just
by altering the magnet rotation and they would flick the powder forwards.
Just a though anyhow.



Regs Mark



Dr. Mark Vaughan Ph'D. B.Eng. M0VAU

Managing Director

Vaughan Industries Ltd, reg in UK no 2561068

Water Care Technology Ltd, reg in UK no 4129351

Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
Phone/Fax 44 1872 561288

RSGB DRM111(Cornwall)

_____

From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Graham Stabler
Sent: 23 June 2007 10:17
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: 3D printer fun with powder



--- In CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups.com, "Mark Vaughan" <mark@...> wrote:

>
> Sorry Graham.
>
> I hadn't really followed this which started while I was away on holiday.
>
> You say in another post that you are trying to cause the roller to

act >as a fine brush, a copier toner unit does form a very fine brush,
if >that's of any use.

Not to worry. I didn't say it acts like a fine brush someone else
might have. They act more like the brushes on the front of a road
sweeper although they push the powder forward rather than drag it back.

The rollers themselves may be useful as they will be of very good
quality and very flat, flatter than the extruded ali I am using even
after a bit of a polish.

Graham





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