Choosing resin for a 3D printer
This page compares resin by material family, not by printer or by process. To choose the printer, see our resin 3D printer buying guide; for washing and curing, see our resin post-processing guide.
Families, not a ranking
Manufacturers group their resins into broad categories, each suited to a specific need rather than a higher or lower quality tier. Standard resins cover most figures and prototypes and remain the most documented starting point for a first resin, with the widest range of published profiles across printer brands.
Engineering, water-washable and specialty categories
Engineering or ABS-like resins target parts that need to survive repeated handling or impact, according to manufacturer data sheets. Water-washable resins simplify cleanup by replacing isopropyl alcohol with water, without removing the need to follow the maker's instructions for disposing of the wash water; a resin that skips the alcohol step is not automatically safe to rinse down a household drain.
Flexible, high-temperature and restricted-use categories
Flexible resins add give that standard formulations do not have, useful for parts that need to bend or cushion a light impact. High-temperature resins target applications like molds or fixtures exposed to heat, typically with stricter post-curing requirements per the manufacturer's documentation. Dental and casting categories also exist on the market, but they cover uses governed by specific standards; use a resin from that category only for the exact validated use, never as a stand-in for a standard resin.
Choose by part, not by product line
Describe the part first: how fragile it is, its exposure to light or heat, and how often it will be handled. Then look in the manufacturer's documentation for the resin and print profile meant for your exact printer rather than for the family in general. A display figure and a thin mechanical part carry different requirements even when both are labeled the same broad category, so the product name alone is never enough to decide.
Check screen and wavelength compatibility before ordering
The wavelength of your printer's screen and the resin's stated compatibility should be checked against the exact manufacturer data sheet before you order, not assumed from a similar-sounding model. A profile available in your slicer is a good sign but does not replace that check, and two printers from the same brand can use different screens between generations.
Budget for the whole process
A resin's material cost is only part of the total: supports, wash consumables and post-curing equipment add to every print. Factor these into your plan alongside the resin itself rather than pricing the resin in isolation, and confirm your washing and curing setup can handle the largest part you intend to print. A resin that looks like a bargain per bottle can still cost more overall once supports and rework are counted.
Safety and storage
Any uncured resin is a chemical product that calls for the protection listed on its safety data sheet: gloves, eye protection and adequate ventilation. Store bottles away from light and heat, and follow local waste guidance for leftover resin and wash water rather than pouring it down a drain.