Platinum "freezes" very quickly, so the machine that casts it must throw the metal into the flask very quickly. The Shor Platinum Casting Machine uses both high torque springs and a vertical centrifugal design for rapid starting and casting speed. Its precision construction will deliver years of trouble-free performance. A question often asked is "Why are platinum casting machines so expensive compared with horizontal gold casting machines?". The primary reason is that, because of the extremely high speed and torque, they must be built to tolerances much finer than gold casting machines (if they weren't, they'd shake themselves apart). The Shor Platinum Casting