This is probably a little boring unless you’re into such things, however I’ve been testing the new rubber I bought – I didn’t want to cast up anything without having a go with it first. Some types of silicon are inhibited from setting by certain materials so it’s a good idea to get used to using them first before you try anything major – you don’t want to turn your mold into a huge gooey mess and waste £xxx of rubber in the process (this stuff ain’t cheap).
Luckily Tinsil seems pretty good stuff. It’s a little less viscous than the old stuff I was using which makes it a little easier to mix and inject into the mold. The colourant is also really good. I had been using a combination of talcum powder and makeup powder to make the rubber opaque and give it a flesh tint, however the colourant makes the rubber completely opaque and flesh coloured with a small amount which is great. It also seems to act in the same way as the previous silicon I was using which means I can carry on using the same method to paint and glue it which is also great.
Next step is to give the Platsil Gel I’ve bought a go. This stuff is apparently a little more picky about what it chooses to react with. It’s also very quick setting (about 6 minutes) rather than the 12+ hours for the ‘condensation cure’ silicons I’ve been using.