I designed a 3d printed case for the FT Aura 5. It has a lid, for one...
Use supports for the top lid.
You need to open the access ports necessary for your setup with a N#11 Xacto knife, for example throttle, right aileron, Sbus an DSM Satellite, this way ports you do not use are covered. Close with 4 M2x10 screws.
Peel off the raft under the buttons.
Weighs 10g in total, but the stock 3d printed base itself is about 4g already.
Use supports for the top lid.
You need to open the access ports necessary for your setup with a N#11 Xacto knife, for example throttle, right aileron, Sbus an DSM Satellite, this way ports you do not use are covered. Close with 4 M2x10 screws.
Peel off the raft under the buttons.
Weighs 10g in total, but the stock 3d printed base itself is about 4g already.