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I have an Epax X1, I have just purchased the 2nd and 3rd bottle of resin, but I don't know what are the best settings.

What is the best way to find the best settings for a new resin?

Is it possible to print a calibration object that starts with some settings and changes as it goes? For example starts with 12 seconds and decreases half second every 5 mm?

EDIT

The 2 resins I am dealing with right now are Nova3D and Elegoo. Any help with those two resins would help right now, but I would love to have a more generic answer that would allow me to explore and troubleshoot any resin without asking every time.

stenci
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2 Answers2

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Since every printer is slightly different (light intensity, for example), you probably want to run one of those 12-spot test patterns where each "spot" gets a different exposure time, then see what time works best.

I found a more general test pattern at Amerilabs Calibration File which may be useful. Not to mention a zillion other test patterns

Carl Witthoft
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This test is not just a verification solid, is a program that tries different exposures and shows them all side by side: https://github.com/altLab/photon-resin-calibration

The test doesn't move slower and slower, but it does something equivalent: keeps the plate in the same position while changing the bitmap.

EDIT

I tried the test, and I'm not happy about it. I tested the same black resin with the 0.02 and 0.05 layer thicknesses, and according to the tests I should use 8 seconds with the 0.02 and 6 seconds with the 0.05. This result goes against anything I heard about relation between layer thickness and exposure time.

I also read in an issue in the repository that the test is not reliable with clear resins. My 2 tests are so thin that my black resin is transparent. I don't know if this is a factor, it just doesn't feel right.

I will keep searching for a better test and update this post if I find one.

stenci
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