As long as you cure both your molds and your resin under pressure ... the sprues into the mold after, or you can make the sprues now with modeling clay. Both have their advantages and disadvantages.

all you need is paper clay like Creative Paperclay's Modeling Compound, water, and a few craft supplies. If you're feeling ...

The origins of clay modeling can be traced back to General ... Jenny Ha: In our design process, too, we make many variants quickly in digital data and quickly review in VR every single week.