Last year when GW came out with their resin basing kit, I kept thinking - that's such a cool idea. Then it sold out. As a solution, I've created a set of resin cast Gears & Pistons that can be piled onto bases in the same fashion. The 12 piece kit provides enough bits for 6-10 bases.
The gears were created by making impressions in clay & casting the voids in resin. The piston pieces are plastic card & tubing. Once the clay was cleaned off of the gear pieces, a RTV mold was made to allow for multiple kits.

Many of the parts are a bit larger than a standard 25mm base & take a bit of trimming to fit.

All 12 parts layed out.

60mm objective marker/character base made from a similar set of parts.