by dahlberg » Sun Mar 08, 2015 7:35 am
No reason at all you can't make the blades out of urethane plastic. You can use clear, or any of the other super plastics.
Use high strength 3 for your mold. Make sure to heat the mold to warm in your microwave prior to pouring, be sure to coat your "pin" for the hole with mold release, and give it plenty, plenty of time to set up before you pull it from the mold. the thinner the part, the longer it takes to cure. You could even cast in a brass or aluminum tube to serve as a bearing.
I would cast a few out of alumifoam and make a couple of double buzzers to see what floating blades would do..
Obviously they could all be dyed, painted or coated with clear coat.
Admittedly they are more brittle than polycarbonates etc., but they hold pretty well, it allows you to get something you want, and you can always make more!
best
L
Larry Dahlberg
The Hunt For Big Fish