Resin Types Compared: Which Anycubic Resin to Print With

Resin choice is made before slicing, and it constrains almost everything downstream. It sets the exposure time, so it invalidates any profile carried over from the last bottle. It sets the viscosity, which governs how fast the plate can lift without tearing the part. It sets whether the finished object is a display piece or something that survives being dropped. And it sets the cleanup chemistry, which decides what equipment the workspace needs.

The families sold for MSLA machines are marketed by application, but they differ along a small number of physical axes. Understanding the axes makes the marketing names readable.

The properties that actually differ

Exposure sensitivity. How much UV energy a layer needs to cure through. Faster resins are formulated with more reactive photoinitiator and cure in a fraction of the time, which is what makes short layer cycles possible on machines with bright, high-resolution masking displays. Slower resins tolerate more error but add hours to a tall print.

Viscosity. Thick resin drains slowly off the part between layers and resists the peel, which forces longer light-off delays and slower lift speeds. Thin resin cycles faster but runs off overhangs and pools in cavities.

Toughness versus hardness. These trade against each other in photopolymers. A hard, highly cross-linked part holds crisp edges and takes a fine surface, and it shatters. A tough part absorbs impact and bends before breaking, and its edges are softer and its detail slightly less sharp. Formlabs’ standard materials documentation sets out this trade-off across a commercial range and is a useful reference for how far it can be pushed.

Dimensional behaviour. Photopolymers shrink as they cure and continue to shrink slightly during post-cure. Formulations differ in how much, and in whether the shrinkage is uniform. This is what determines whether a multi-part assembly fits.

Pigment load. Dark and heavily pigmented resins absorb more light in the top of the layer and cure less deeply for the same exposure. Clear resins cure deeper than intended, which closes small holes. Pigment is a bigger exposure variable than most people expect, and it is why two bottles of the same product in different colours are not interchangeable.

Post-cure response. Almost all photopolymers are only partly cured when the print comes off the plate. Post-cure raises stiffness and surface hardness and removes tackiness, and past a point it also makes parts brittle and can yellow them.

The families side by side

Family	Best suited to	Exposure	Toughness	Watch out for
Standard	Display models, miniatures, prototypes	Moderate	Low, brittle	Shatters on impact; degrades in sunlight
High-speed	Tall prints, production batches	Short	Low to moderate	Very sensitive to over-exposure; detail bloats fast
ABS-like / craftsman	Parts that get handled, light functional use	Moderate to long	Moderate	Not actual ABS; still not a load-bearing material
Tough / engineering	Snap fits, brackets, functional prototypes	Long	High	Softer detail; often needs a longer post-cure
Plant-based	Low-odour workspaces, beginners	Moderate	Low to moderate	Still an irritant; PPE requirements are unchanged
Water-washable	Workspaces without solvent handling	Moderate	Low, brittle	Wash water is contaminated waste; parts absorb moisture

Standard resin is the baseline: inexpensive, easy to source, high resolution, and brittle enough that a thin miniature limb snaps if it is dropped. It is the right default for anything that will sit on a shelf, and the wrong choice for anything that will be used.

High-speed resin trades latitude for cycle time. Its exposure window is narrow, so the gap between a layer that fails to bond and a layer that bloats and closes fine holes is small. It rewards a calibration print and punishes a guessed profile.

ABS-like or craftsman resin is a marketing description of a mechanical target rather than a chemistry. These formulations bend further before breaking than standard resin and hold up to handling, at the cost of longer exposure and slightly softer edges. They do not have the heat resistance or the impact behaviour of injection-moulded ABS, and treating them as though they do leads to disappointment.

Tough or engineering resins push further along the same axis. Elongation before break is meaningfully higher, which is what allows snap fits and clips to work. The trade is a longer exposure, a more demanding post-cure, and detail that is visibly less crisp than a standard resin on the same machine.

Plant-based resins substitute plant-derived monomers for part of the petrochemical content. The practical benefits are lower odour and, in some formulations, easier disposal of cured waste. The practical caution is that “plant-based” is not “food-safe” or “skin-safe”: uncured photopolymer of any origin is a skin and eye irritant, and the gloves, eye protection, and ventilation requirements are identical.

Water-washable resins allow parts to be cleaned in water instead of isopropyl alcohol. This removes a flammable solvent from the workspace, which is a genuine benefit. It introduces two others. The wash water becomes a container of dilute uncured resin, which is contaminated waste and must never go down a drain; it is cured solid under UV and disposed of as solid waste. And parts printed in these formulations are generally more brittle and can absorb moisture over time, which affects long-term dimensional stability.

Exposure belongs to the resin, not to the printer

The single most common cause of a failed switch between bottles is reusing the previous profile. Exposure time is a property of the resin, the layer height, the pigment, and the ambient temperature, with the machine’s light output as one term among several.

Bottom-layer exposure is a separate setting from normal exposure and is typically several times longer, because those layers have to bond to a steel plate rather than to cured resin. Getting this wrong in one direction leaves the print in the vat; getting it wrong in the other welds the part to the plate and produces a flared base.

The reliable procedure is a calibration print that steps exposure across a range on a single plate. The AmeraLabs Town test part is a widely used geometry for reading the result, because it puts fine pins, small holes, thin walls, and shallow embossing on one small model, and each feature fails in a characteristic direction. Over-exposure closes the holes and fattens the pins; under-exposure loses the pins and leaves the walls incomplete. UVtools includes generators for exposure-matrix test prints that produce the stepped plate directly.

For a starting point before the calibration print, the resin exposure calculator estimates normal and bottom-layer times from resin family, layer height, and model height. Treat the output as the centre of the range to test, not as a finished profile. Anycubic’s own 3D printing guides publish starting profiles for their materials, which serve the same purpose.

Temperature is part of the material

Photopolymer viscosity climbs sharply as it cools, and cure rate falls with it. The same bottle that printed cleanly in a warm room fails in an unheated one, with symptoms that look exactly like under-exposure: layers that do not bond, parts that separate from supports, prints found lying in the vat.

Vendors generally specify a working range in the region of 20 to 30 degrees Celsius. If the workspace is colder than that, the options are to warm the room, to warm the resin before pouring, or to lengthen exposure to compensate, in that order of preference. A resin profile calibrated in summer should be re-checked in winter rather than trusted.

Handling, waste, and post-cure

Uncured resin is an irritant and a sensitiser, meaning repeated exposure can produce a reaction where none existed before. Nitrile gloves, eye protection, and ventilation are baseline for every family in the table, plant-based and water-washable included.

Waste follows one rule: nothing uncured goes into a drain or a general waste bin. Failed prints, drips, contaminated wipes, filtered residue, and used wash liquid are all cured solid under UV first, then disposed of as solid waste according to local rules.

Post-cure is part of the material specification rather than an optional extra. A washed part still carries unreacted monomer at the surface, which is why it feels tacky. Curing under UV completes the reaction, raises stiffness and hardness, and removes the tack. The duration depends on the resin, the part thickness, and the lamp, and over-curing is a real failure mode: parts become brittle and clear resins yellow.

Choosing in three cases

A shelf model or a miniature: standard resin, moderate exposure, calibrate for the finest feature on the model. Detail wins and brittleness does not matter.

A part that will be handled, clipped, or fitted to something else: an ABS-like or tough resin, longer exposure, and a test of the fit after post-cure rather than before, because dimensions move.

A tall print or a full plate that has to finish overnight: a high-speed resin, but only after a stepped calibration plate, because its narrow exposure window is exactly what makes it fast.

Common mistakes

Reusing an exposure profile across a resin change or a colour change. Calibrating in a warm room and printing in a cold one. Reading “plant-based” or “water-washable” as a reason to drop gloves and ventilation. Pouring wash water down a drain. Skipping post-cure and concluding the resin is weak. Over-curing and concluding it is brittle. Choosing a tough resin for a miniature and then blaming the machine for soft detail.

Once a resin and an exposure are settled, the failures that remain are geometric, and those are visible in the sliced file before printing: see checking a sliced file with a Photon file validator. If the first few layers are the problem rather than the model, start with bed leveling and Z offset. And if the choice between a resin machine and a fast filament machine is still open, that comparison is set out in resin MSLA compared with high-speed FDM.