Overview

A clean optical path is essential for accurate and reliable Pro S printing. Dust, resin, smudges, or scratches on the optical glass or the underside of the resin tank can distort projected light and lead to failed or low-quality prints. This article explains how to properly clean and inspect these components.

Before You Begin

Make sure you have the following:
• Isopropyl alcohol (91 percent or higher)
• High-quality glass cleaner
• Microfiber cloth or non-abrasive shop towels
• Adequate lighting to inspect the optical surfaces

How to Clean the Optical Glass

1. Remove the Build Platform
   1. Remove the platform from the Z-axis arm and set it aside.
2. Remove the Resin Tank
   1. Unlock and lift the resin tank out of the cradle to expose the optical glass inside the printer.
3. Clean the Optical Glass on the Printer
   1. If any resin is present, wipe it with IPA first.
   2. Apply glass cleaner to a towel (never directly onto the printer).
   3. Wipe the optical glass thoroughly until smudge-free and dry.
4. Clean the Underside of the Resin Tank
   1. Inspect the bottom glass for fingerprints, dust, or residue.
   2. Apply glass cleaner to a towel and gently wipe the surface.
   3. Make sure the surface is completely clean and streak-free before reinstalling.
5. Inspect the Interior of the Resin Tank
   1. Look for dimples, scratches, or clouding on the plastic film.
   2. Replace the tank immediately if any damage is visible.