A reliable source tells me they're spin-casting the Finecast stuff.
This is an interesting development.
So metal is great to spin-cast because it cures so quickly and is dense enough to force the air out of the voids in the mold when you spin it. You only have to spin the thing for about 10 seconds (including ramp-up and slow-down time) to get a good cast out of it.
A thermoset (two-part epoxy) resin could not be spin-cast unless you spin the mold for between 5 and 10
minutes to account for curing time. This is the stuff I work with most often. I guess it's technically possible?
Then there's thermo
plastic resin. Which is pretty much the most dirt-cheap material you can buy for something like this. Like metals, thermoplastics melt into a liquid when heated to a certain temperature (unlike thermoset resins which will actually burn). Polystyrene is a prime example of a thermoplastic material. Unfortunately, thermoplastics suck for spin-casting because when you spin the mold and sling the material into the voids it isn't dense enough to force all the bubbles through to the center.
This is an interesting development, indeed.