Bicycle Seatpost Clamp

I have currently two full-suspension frames without seat clamps. Since the seat post clamps I ordered are coming a long way from China but I need to clamp seatposts into the frame for working with them, I designed a simplyfied seatpost clamp which I will use as temporary solution. Possibly this will even work as permanent solution when using PET, ASA or ABS.

I designed the clamp for usage with an M5 inbus screw plus a M5 nut.