Late to the party but by this stage there are so many resources and tutorials this should be easy.
Incidentally the total cost for all the associated stuff to start 3D printing (Printer, wash and cure, USB stick, gloves, cleaning alcohol, work tray, etc.) is roughly the same to start metal spin casting.
The main practical differences seem to be:
- Space - 3D printing requires slightly less space and is more 'home friendly' (you'd keep the metal spin caster in the garage but the 3d printer looks trendy in the office at home)
- Time - 3D printing has a bit of a time lapse vs metal spin casting, you can cast up 10-15 minis in as much time in metal. 3D printing said minis seems like it will take 3-5 hours depending on layout
- Hands on - naturally there's more 'manual labour' doing metal spin casting, but that has it's benefits such as quick corrections and tweaks to moulds to get the metal to flow better. The set up and let it run aspect with 3D printing seems to mean a greater cost sink if the print fails.
The similarity seems to be in the engineering aspect, metal spin casting needs gates, channels and air vents. 3D printing needs support struts. Different but similar challenges with both manufacturing processes.
I'll do a full comparison at a later date once I'm up and running.
I anticipate using this primarily for masters that go into metal spin cast moulds. Also, personal items and quick prototyping concepts. Mainly mechanical sculpts that require symmetry, flat surfaces and right angles.
That said, there's no reason I can't put 3D prints up on the webstore - this will help be flesh out some of the existing ranges with larger items.