Another design for a friend's Xmax Ace vaporizer. 

This is a basic loading funnel which sits on top of the device, allowing easier loading of material without spilling. 

I've found this design prints well upside down without supports in PLA, or right-side up with supports in PETG on my Creality K1C. 

I've found that the standard scale results in a tight fit when printed in PLA or a looser fit in rPETG when printed on my Creality K1C. Scale may need to be adjusted according to your preferred fit.