A simple explanation of KF wings. Give them a go, they are very suited for use on all powered models

I am currently designing a small desktop rotating speaker, it is basically a miniature version of a rotating polystyrene Leslie baffle that is found in the g...

http://forums.thehomefoundry.org/index.php?threads/using-silicone-molds-to-make-eps-patterns-for-lost-foam.842/