Re: 3D printer fun with powder

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> Have been experimenting further, the plaster I have is not fine enough
> I am fairly sure, its certainly not as fine as the corn flour I have
> so I have gone back to using corn flour even though I have read it is
> a bit harder to spread than plaster. I'm pushing it through a sieve
> with a spatula and it seems pretty fine.
>
> At the moment the 10mm roller cuts through the supply area nicely
> leaving a nice finish but the powder it pushes gets turned in to
> perfect little sausages and these roll over the build area without
> dropping in. Increasing rotation speed of the roller helps a bit but
> powder then tends to get pulled around with the roller and thrown
> backwards.
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> So I'm going to a bigger roller, I think 7/8" was mentioned before
> anyway, I've picked up some 20mm aluminium tube that I'll polish up, I
> can always go to stainless later. I have a feeling the angle the
> roller makes with the surface will help and it will be more difficult
> for powder to find its way over the back of the roller.
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> Graham
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