So i pulled the trigger on this idea the other day and i plan on melting my own gold and silver products. I bought a CNC router (probably overpaid but oh well) and it is on route. I am curious mainly on how to use this machine to make graphite molds of 1 gram size bar or round (gold) and also 1 oz (silver) molds with various shapes. Are there any good video to watch on how to do this? do i just need to know more math to figure out the dimensions of the cut? any help you can throw my way to get this off the ground would be very welcome