A simple 30mm flight controller mount. I use gyro foam/tape to mount it to frames that don't have 30mm mounting holes.
Edited Jan 26, 2020 to fix centre-to-centre length (was 30mm, now correct @ 30.5mm) and added additional thickness and space to accomodate hex-head screws and surface area for gyro tape/foam.
Edited Feb 12th, 2020 to simplify shoulder around bottom screw holes. Easier to print. Confirmed print with PLA at 80% infill works perfectly.