Ordered silicone cast form, bought a crockpot (worked 10x better than i hoped it would for melting) and starting casting my own wax bases. Pretty satisfied with them. Yes, I know they are not rectangular …but i did not want the form to overflow or the sheets become too thick. I need to cut them a bit anyway and Like all beekeeper mistakes : the bees will fix it.
That seems very nice. My dad used to just lay it on the wires of the frame and use candle for dripping wax above the wire to fix it in place.