Boerni 2 Pack Silicone Resin Molds Moulds Crafting Kit Jewelry Making Set for Jewelry Casting, DIY Pen Holder

Quite difficult to remove, the silicone is thick and quite inflexible, so is actually quite a pain to remove and a few times I ended up breaking the plaster... so not suitable if you're going for a mass production.

Wasn’t the best mould ever but it was definitely better that others. It was a struggle to get the resin back out of the mould once it was dry, but other than that it was decently good.