The resin tank contains resin and maintains clarity in the optical path for the laser to properly cure resin. Make the most of each resin tank’s lifetime with proper care and cleaning between prints. For the best results, the inside and outside of the tank – including resin – should always be clean.

After several liters of resin, depending on the specific printed geometries, the resin tank’s surface will appear too cloudy to achieve good printing results; follow these guidelines for replacing a resin tank.


Always wear clean gloves when handling resin or optical surfaces.

Cleaning Outside the Tank

The clear window on the tank’s underside must be perfectly transparent for the best print results. Do not touch the plastic window with hands, and avoid resting any tank on an unprotected surface.


When the tank is empty, use the glare from an outside light source to check the bottom surface of each tank.


Clean the tank’s clear acrylic with Novus 1 acrylic cleaner and a clean microfiber cloth.


Protect the ID Chip

Each resin tank has its own ID chip that the Form 2 uses to detect, track, and match the resin type with the proper resin cartridge. Uncured resin on the ID chip or tank carrier may cure with exposure to nominal electric current; cured resin will block the Form 2 from properly reading an inserted tank. Watch for the small ID chip on the underside when handling a tank and resin.

Cleaning Inside the Tank

Each resin tank includes a new wiper. Between every layer of a print, the wiper slides across the surface of the resin tank – the PDMS or silicone layer – to properly agitate the resin and remove particulates from the optical path. The wiper helps keep the silicone layer clean. Use the scraper included with your finish kit to check the inside of the tank.

The best practice is to hold the scraper at a shallow angle, starting at the back edge of the tank, scanning the full surface of the tank before and after each print. Take care when touching the silicone; check for incomplete prints, scratches, or settled resin.

If dirt, dust, or debris contaminates the resin, or if a failed print leaves bits of partially cured resin, the resin itself may need to be cleaned. Use a fine-toothed comb to inspect the resin, or consider using paint filters with a mesh size of 190 microns to strain used resin for small particles. Strain resin from the resin tank into a clean, secondary container, before returning clean resin back to the tank. Carefully follow these additional steps to return the resin and resin tank to printing condition after a failed print.