3D Resin Phrozen Water-Washable Model Gray

Phrozen Water-Washable Model Gray 3D Resin is a gray photopolymer resin designed for resin 3D printers (MSLA/LCD) that eliminates the need for isopropyl alcohol in post-print washing: plain tap water is all you need. It offers good mechanical strength, low viscosity and low odour, making it a solid choice for both beginners and professionals looking to streamline their workflow.

Technical specifications

What it's used for

This resin is designed for applications requiring detail, some residual flexibility and fast post-processing without solvents. It is especially suitable when working in poorly ventilated spaces or when you want to simplify chemical waste management.

• Collectible miniatures and tabletop gaming figures
• Product prototypes and presentation models
• Concept models and display pieces
• Low-load functional parts
• Educational projects and introduction to resin 3D printing
• Small-part batch production where wash time matters

How to use it

1. Shake the bottle thoroughly before pouring the resin into your printer's VAT. If it has been stored for a while, shake for at least 1–2 minutes to homogenise the pigment.
2. Set your print parameters using the profile recommended by Phrozen for your printer model. If no official profile is available, start from standard water-washable resin values and adjust normal layer and base layer exposure times.
3. Print the model with appropriate supports. The low viscosity of this resin aids drainage, so support structures can be lighter than with high-viscosity resins.
4. Remove the part from the build plate using a spatula and nitrile gloves. Pour any excess liquid resin back into the bottle.
5. Wash the part with tap water at room temperature. A container with water and a soft brush speeds up the process. No isopropyl alcohol is required, though you can use it for a cleaner finish if desired.
6. Dry the part thoroughly before moving on to the curing stage. Residual water can interfere with UV post-curing.
7. Post-cure with UV light (curing station or UV lamp) for the time recommended by Phrozen to achieve the final hardness and mechanical resistance values stated in the specifications.

Tips and advice

Exposure parameters

Water-washable resin typically requires slightly different exposure times compared to standard resins. Start with the official Phrozen profiles for your printer and run a calibration test (mesh or fine-lettering exposure test) before printing final models. Excessive exposure time can fill in fine details and increase brittleness in the cured part.

Wash water management

The main advantage of this resin — no isopropyl alcohol needed — comes with a responsibility: wash water accumulates uncured photopolymer resin, which must be treated as waste. Collect the water in a transparent container, expose it to sunlight or a UV lamp until the resin precipitates, filter out the solid and dispose of it as solid waste. The resulting water can then be disposed of more safely. If your workflow involves intensive cleaning, 99.9% isopropyl alcohol remains a complementary option for a final rinse.

Storage and shelf life

Store the bottle tightly closed, away from UV light, in a cool and dry place. Exposure to ambient light degrades the resin over time. If you notice lumps or unusual sediment that does not disperse after shaking, the resin may have begun to partially polymerise and should not be used. Once opened, use it within a reasonable timeframe and avoid leaving resin in the VAT longer than necessary between print sessions.

Frequently asked questions