"Pete C." wrote:
>
> Stars, hearts, etc. would make interesting designs. One thing you need
> to keep in mind is that the mechanism doesn't provide any way to change
> the drive ratio between the two substances, so you need to maintain the
> same ratio of core area to exterior area, regardless of the pattern, or
> you will have issues with under filling one area relative to the other.
> It looks like the ratio is 50/50.

No, it's more like 60/40. The masa chamber is bigger.
The drive ratio is fixed, so you are correct that the
ratio will have to be strictly observed. Thanks for
pointing that out, I hadn't considered that. That
means I won't be able to have a selection of nozzles
of different diameter.