I have several Peak Design mounts
Motorcycle stem mount, bike out-front, universal mount, car mount
They are made for phones so I made a small accessory so that I can put either my phone or my Edge 1040, depending on my need.
How did you attach the two parts?
Did you put a thread in the metal plate?
Moritz
I put a countersunk head, the thread is in the black plastic part.
Peak Design Universal adapter is then stick to metal plate.