Special part for 'Universal Projector Mount'

Needed a ceiling mount for my projector, found this one https://makerworld.com/en/models/433325-universal-projector-mount-all-axis-of-rotation by @Rogue1 but the part that connects to my projector didn't work for me. So I designed a new one. You can find the Fusion 360 file in the downloads if you need to change anything for your projector.