3D printer resin
Resin is a light-sensitive liquid that an LCD/MSLA or SLA printer cures layer by layer with 405 nm light. It gives far finer detail and smoother surfaces than filament, which is why it is the standard for figures, jewellery and dental work.
What it is good for
Standard resin suits models and figures; ABS-like resin is tougher for functional parts; water-washable resin is the convenient choice at home; flexible, high-temperature, castable and dental lines are specialist materials chosen per job.
Which printer
Use a resin printer whose screen size and resolution match the part — ELEGOO Mars and Saturn series for general work, Formlabs or HeyGears professional machines for dental and engineering parts. Take exposure settings from the printer's profile for the resin brand.
Storage and care
Wear nitrile gloves and work with ventilation. Wash parts in IPA or water as the resin type requires, then cure fully under UV. Store resin in its opaque bottle away from sunlight and heat.
