When I first got into casting I basically followed factory guidelines. A mold contains 2 halves. But those are steel injection molds. As my experience has progressed, I have found that maintaining a 50/50 mold split is making for ALOT of extra work because of where the cast line ends up.
We all know how much I hate cast lines. With steel the molds are unforgiving so it has to be a 50/50 split. We are using silicone. which is flexible. We can bend and stretch the mold carefully to remove pieces from the mold that would be impossible with steel. Not only that, by varying the surface contour, we are helping to ensure positive alignment of the mold halves.
These following pictures are the new molds for Homeworlds upcoming Anniversary Edition Crystal Roboid.
Im looking forward to doing this more and more.