This is a seal for the holes behind the screen of the Qidi Plus 4. When printing ABS or ASA fumes might leak out from these holes. This seal prints in a few minutes, no support and very little filament. 

The print is a frame in two parts. A left and a right. They friction fit behind the screen. One part is inserted from the left, you might have to slightly pull the screen out from the machine to make it fit, and do the same on the left side. The frame is sealing off once the two parts meet in the middle.

If the seal seems too hard to fit, you might have to scale the z direction until it fits as you want. Variation in how it fits can be due to different materials being used, and filament calibration.

The seal is intended to be mounted so easily that the pressure on the back of the screen is minimal, but snug enough to form a good enough seal. 

NOTE:  Due to how this fits the machine, Use at your own risk. I take no responsibility for any use! Dont pull too hard on the screen!! Use at your own risk!