Fun DIY stuff. I often have need to quickly dry a wet clay pot, but it needs to dry evenly. I attached these fins to what we call a banding wheel. Another one- I use wood ash and some nasty natural materials in glazes- they have to be sieved bit the screen gets all clogged up. It takes forever to scrub the stuff through with a brush, so I built a vibrating sieve based on a Harry Davis book with a design for a heavy duty one to screen dry materials. The vibration is provided by the motor out of a broken window fan. I clipped the blades off it and put a deck screw in the side to provide the wobble/vibration. Screw it in for higher frequency, out for more amplitude.