I chose a cold cure acrylic which means it does not need to be cast under a controlled heat whilst also under pressure (I would need an autoclave for this). I used a hydraulic pressure pot which was recommended to me by Darren and another industry professional to use for this purpose. I set up in our uni's polyester resin room which had the best ventilation and was wearing gloves and a respirator throughout. The photos below show an all-pink acrylic tester I did to practice with the material and one of the original gum sculpts with the teeth taken out and 'glued' into it's mould with tiny amounts of vaseline. The teeth are also acrylic, so they stayed imbedded in the acrylic gums (which means one chance to get them right!):
The next photos show me mixing the acrylic, pouring it into the mould (with the teeth imbedded), the mould in the pressure pot chamber after the acrylic had reached it's snap cure making it ready to be put in water and before the lid and pressure was put on. The last photo shows one half of the final set after de-moulding, they were ready to de-mould after roughly 20 min...
These teeth will now be put aside until the last minute, then they'll be coloured up and inserted into the model at the same time as the glass eyes.
