Couple questions regarding the synth. I'm going to be purchasing a Pressure Pot soon and need some more information on how to safely use it, I know it applies a uniform pressure to the entire pot and helps push out air bubbles. Using the synth in the past when casting I just use it as shown, create a mold of the top with your sculpt, remove sculpt, cast into mold and press synth into that on top then insert stem all the way and let sit.
Now is it safe to still cast in this manner and place this into the pressure pot? My brain says that without in some way securing the synth/synth stem to the mold that the synth/synth stem would pop out of the mold. Is it okay to just rubber band this down, or is it safer to just create a two part mold (mold of synth+sculpt, and mold of synth butt+stem) and rubber band those together? Obviously I will need to do the latter part eventually when casting more then one at a time, but for now I'm just working with a one off for testing/finalizing before I proceed.
TL:DR I am okay using the synth to cast without a pressure pot, about to use one, whats the safest way to go about casting using the synth in the pressure pot?