Re: lexmark 3d printer is back

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Graham Stabler"
<grezmos@...> wrote:

>
>
> > Santa stop by to help me out :)
> > The roler came from a old lexmark laser printer toner cartridge.
> > it's aluminum an about 30mm diameter.
> >
>
> I used to have a nice roller like that but thought I would never

need

> it, should be easy to find one though.
>
> What about the rotation speed, have you synced it to the movement

of

> the gantry or did you just experiment? How well does it work and

do

> you think the plaster used is of great importance, you used zcorp
> stuff right?
>
> Cheers,
>
> Graham
>

I'm using just plain plaster, it does not spreads nice.
Zcorp plaster is granulated, almost like refined sugar, it should
spread very nice, I don't have enough zcorp powder to fill the
feeding bin with it, so can't tell for shure.
i've tried refined sugar and it spreads very nice.
The rotation speed was just to get the powder spread,not shure at
what speed it's rotating, I guess it's about 200rpm.
The type of plaster is very important, as it should spread without
lumps.
There is a granulated dental plaster that I've to check it out.
I think that the main thing is to get the right binder or glue to
hold the plaster particles togheter and does not clog the printer
head, that's a tough one.