This is a Vacuum Forming tool. I used 0,5mm thick PET sheets. Finished canopy is about 0,7-0,8g.
Designed to fit the CM275t/VM275t cam, but it should hold any which is the same size, just check the drawing.
There is a mount for the Cam, it should be printed in TPU. Altough it's not necessary needed. A little foam will also do.
I made it in PLA and it works. A more heat resistant filament should work even better.