You must be logged in and verified to contact the designer.
This is a frame for a ribbon motor, used to build diy ribbon mics. It's designed for use with 2" x 1/2" x 1/4" neodymium magnets with a center countersunk hole for mounting to the frame and 1/8" space between magnets. Ribbon length allowed is 1.1/2" x 3/32". All bolt/screw holes are 1/16 diameter.