Yes, you read the title right, I have found a way to print on glass on the Neptune 3 Pro, the Neptune 3 Plus, and the Neptune 3 Max. The sensor on the Neptune 3 Pro only is able to sense metal so when you try to print on glass it just rams the head into the bed. However, now you can 3d print this mod and use the stock ABL to level the bed on glass. you can use the stock screw to put the holder part on the head and then the tin can lid will be glued to the other end of the inside part. as the z-axis moves closer to the bed it pushed the tin can lid closer to the sensor. the sensor then senses the tin can lid and stops. After you level the bed you can start the print leaving the part on the head. once the printer has gone home at the start of the print you can remove the mod. Now your printed is printing on glass. Please watch my video here for more details: https://youtu.be/9iLp3VpZ-h0
Parts needed: 3d printed parts tin can lid super glue
Also, since I have posted this I have since fixed a major problem with it. Please see here for the fix: https://www.thingiverse.com/thing:5897878 Check out my LinkTree here: https://linktr.ee/westinspace