Quick little print I made to show how much resin is left in my mono x vat, its not fancy, but works.

I started with an empty vat, added 100ml water and measured the height of the water, added another 100ml and measured again, and so on.

Transferred those measurements to the print, the idea is that you print in say white, then when fully cured, manually "drip" in another color (black) into the lines and letters, then cure again to give you a bi-color print, or you could of course use use a permanent marker lol.

PLEASE make sure that you put it at the back of your vat far enough so that the build plate does not hit it on the way down!!

It's not going to be 100% accurate and it depends on how tight your FEP is, but its good enough for a rough idea.

If its useful and you feel like it send me some BTC:

3HjpywZgwRnNVL21EuooKjfXCSFa6wU4VM