Why Use a Resin 3D Printer Curing Time Compensator?
When changing layer heights (such as moving from 0.05mm standard prints to ultra-detailed 0.03mm layers) or switching between different resin colors, your UV light exposure times must be adjusted accordingly. This calculator applies proper scaling formulas to help you determine accurate exposure settings for MSLA / LCD 3D printers.
How Layer Height and Resin Pigment Affect Exposure Time
UV light penetrates resin to cure each layer. Thinner layers require slightly less exposure time because there is less volume of liquid resin to cure per layer, while opaque or darkly pigmented resins (like black or dark grey) block UV light diffusion and require higher exposure times to achieve proper layer adhesion.
Frequently Asked Questions (FAQ)
When you decrease layer height, the amount of resin cured per layer decreases, meaning you can typically reduce normal exposure time slightly to prevent over-curing and loss of detail.
Dark pigments absorb and block UV light, slowing down the photochemical reaction required to cure the resin, thus requiring higher exposure seconds.
Bottom layers (or burn-in layers) are exposed significantly longer (usually 8 to 12 times normal exposure) to ensure the print model firmly adheres to the metal build plate.
An exposure test print (like the AmeraLabs Town or Cones of Calibration) prints multiple small models at varying exposure times to find the absolute best setting for your specific printer and resin.
Yes! Modern monochrome LCD screens let significantly more UV light pass through compared to older RGB screens, slashing normal exposure times from 8–10 seconds down to 1.5–3 seconds.