Standard vs ABS-Like vs Water-Washable Resin: How to Choose

The type of resin you choose affects more than just the appearance of your 3D prints. It also affects part toughness, cleaning methods, and post-processing requirements. Understanding resin printing fundamentals and the key differences between common resin types helps you pick the right material for your project.

How Does Resin 3D Printing Work?

Most desktop LCD resin printers use UV-sensitive liquid photopolymer resin. During printing, UV light, commonly around 405 nm, selectively cures the resin layer by layer to build a solid object.

Since the resin reacts to light, it should be stored in a sealed, light-protected container. Follow the manufacturer's storage instructions to help maintain its quality.

Washing and Post-Curing Resin Prints

Freshly printed models usually have uncured resin residue on their surfaces, so washing is an essential part of post-processing.

Standard and ABS-like resins are commonly cleaned with isopropyl alcohol (IPA) or another manufacturer-approved cleaning solution. Water-washable resin can be cleaned with water when specified by the manufacturer. However, the wash water can contain uncured resin and must be collected and disposed of properly, not poured down the drain.

After washing, allow the model to dry as directed before UV post-curing. This additional step helps the print achieve its intended properties. The required curing time depends on the resin, model geometry, and curing equipment, so follow the product instructions rather than relying on a universal time.

Always wear suitable protective equipment, avoid direct contact with liquid resin, and work in a well-ventilated area.

Standard vs ABS-Like vs Water-Washable Resin

Standard Resin: For Fine Details

Standard resin is a practical choice for miniatures, figurines, decorative models, and visual prototypes. It can produce fine details and smooth surfaces, making it suitable for prints where appearance is the main priority.

However, some standard formulations can be brittle under impact. Thin features and delicate parts may break if dropped or handled roughly.

ABS-Like Resin: For Improved Toughness

ABS-like resin is formulated to offer improved toughness or impact resistance compared with many standard resins. It is often considered for functional prototypes, small enclosures, connectors, and parts that need to withstand regular handling.

Despite its name, ABS-like resin is not the same material as traditional ABS filament. Its actual strength and flexibility depend on the formulation and post-curing process, so check the manufacturer's technical specifications when durability matters.

Water-Washable Resin: For Water-Based Cleaning

Water-washable resin is designed to allow uncured residue to be removed with water, offering an alternative to solvent-based cleaning. This can be useful if you prefer a water-based workflow.

However, water-washable resin is not automatically stronger, safer, or better than standard resin. Its mechanical properties vary by formulation, and contaminated wash water still requires proper disposal.

Which Resin Should You Choose?

For detailed display models, standard resin is a sensible starting point. If your prints need improved toughness for handling or assembly, consider ABS-like resin. If you prefer water-based cleaning, water-washable resin may suit your workflow.

Before buying, check printer compatibility, recommended exposure settings, mechanical specifications, and post-processing requirements. Choosing resin based on the intended application and the manufacturer's technical data is more reliable than relying on the resin category alone.