As you can see in the instructable it might be slow because you have to let the mold cool between each run.
Also I think it would be hard on your hands to run it as you’d need to press the material through the mold manually.
When I saw this video I started to see how it’s a fairly simple process:
But this video I got from MakeYourOwnStuff is really exciting.
I was just talking with of MYOS and he said the cheapest machine they have is 17,000:
On this note: