Lovely

Where are the vents from?
I made a master and a press mould and made them out of air-drying fimo. They were my first efforts and if I'm honest not that great - they distorted quite badly as they came out of the press mould.
I've now refined the process and have made a small press tool. I find this makes them more consistent as the cutter holds the fimo in shape and they don't have to be moved before they're baked.
I roll out Fimo to about 2 mm thick on a metal tray, press the square cutter into the fimo, put the press tool into the cutter and press the vents in, then peel the unwanted fimo from around the cutter before removing it and the press tool at the same time. Then they get baked on the tray.
I've got some RTV rubber and some 2 part casting resin so I'm going to me making a mould as soon as Amazon deliver my mould release spray!