Flight controllers with M3 mount holes can be soft mounted using these dampeners which are eliminating any vibrations coming through the mounting screws and arms.

The one side with the hole goes on the mounting nylon screws and the other side flips over and goes underneath the FC mounting holes. I haven't yet tested the flexibility with different materials but the most appropriated to print with would be TPU.

Two different lengths 20mm & 25mm

Versions Dampening v1 with one hole and one pin (Softer) Dampening v2 with one hole and one bullet pin for better grip (Harder) Dampening v3 with one hole and one bullet pin for better grip (Softer) Dampening with two holes for use your own screws and nuts (Harder)

Trim down the pin to your flight controller hole with a sharp plier if its not possible to fit.

Please let me know your thoughts. Thanks.