Avionics Bay sled for MissleWorks RRC3 and RTx electronics mounting in 98mm diameter rockets.
I have added a STEP formatted geometry file to the downloads.
The sleds have flown in my Madcow Sensor and Madcow Black Brant 2.
Make sure you have good layer adhesion, the sleds are subject to large accelerations in HPR rockets. I use PETG to better hold up in the summer heat.