I've looked up centrifugal casting and watched some video's on youtube etc. even though I'm pretty new on the jewellery scene I think if I had a centrifugal casting machine I could do a lost wax casting with a few sprues at a time in the form of a tree so i.e make a few rings at a time, but a centrifugal casting machine is expensive!!! I would like answers to these questions or advice on these questions aswell thanks.

1.can I make my own centrifugal casting system for less than buying one and if so what do i need to do so?

2. can I use dentist centrifugal casting system for jewellery or is that a no no?

3. does anyone have a spare centrifugal casting system that I can buy at ''mates rates''

4. thanks for reading the above