What Materials Can the 3D Systems Figure 4 135 Print?

Direct answer: the current 3D Systems Figure 4 135 page explicitly validates nine resins: Figure 4 Tough 75C FR, FLEX-BLK 20, Tough FR V0 Black, Rigid White, High Temp 150C FR Black, Rigid Gray, PRO-BLK 10, EGGSHELL AMB 10 and HI TEMP 300-AMB. Its February 2026 brochure also lists JCAST GRN 20, Tough 65C Black, RUBBER-65A BLK and Rigid Composite White. Treat those four as confirmation-required until 3D Systems identifies the current Figure 4 135 profile, packaging and complete finishing workflow for the machine and region.

This is a projection photopolymer system. A liquid resin does not become compatible because it cures under ultraviolet light or fits in the tray. Useful support connects an exact resin SKU and lot to the current 3D Sprint profile, layer settings, tray and replenishment method, washing chemistry, dry time, post-cure program, handling controls and finished-part evidence. The public specifications say printer warranty and support may be limited when unauthorized materials are used.

Figure 4 135 material compatibility at a glance

Why the live validation footnote controls the first decision

The current Figure 4 135 product page presents several material cards, then separately identifies its validated materials. That exact footnote is the cleanest public starting point because it is tied to the live machine route rather than the broader Figure 4 portfolio. It names nine resins across rigid, flexible, flame-retardant, high-temperature and sacrificial-tooling jobs.

The February 2026 exact-model brochure names thirteen materials. Its broader list is useful evidence, but it also states that not all products and materials are available in every country and tells buyers to consult local sales. The difference between the brochure list and the live validated footnote is a real purchasing gate: ask for the current material SKU, 3D Sprint profile, supported layer settings, resin-supply format, wash process and post-cure schedule before quoting a production job.

Availability in a hand-pour bottle and availability in a 9 kg auto-refill cartridge are different operating questions. The brochure says selected materials have auto-refill cartridges; it does not say every listed resin comes in every format. A fleet or unattended-workflow plan should identify the exact cartridge route instead of assuming that a bottle-listed resin supports automatic replenishment.

Rigid and tough resins answer different loads

PRO-BLK 10, Rigid White and Rigid Gray are the general rigid-production group on the validated list. Use them when the application needs a stiff housing, cover, bracket or appearance model and the current material data matches the actual environment. “Production-grade” is a manufacturer positioning claim, not proof that an arbitrary thin wall, snap, thread, boss or fastener interface will survive its duty cycle.

The current PRO-BLK 10 route supplies the manufacturer's property and application context. Preserve its specimen, conditioning and test-method scope. Resin parts can be sensitive to orientation, wall thickness, cure, notches, fastener stress, cleaning chemistry, UV exposure, humidity and time. Qualify the real geometry and assembly instead of selecting by a single tensile number.

Tough 75C FR and Tough FR V0 Black introduce flame behavior as well as mechanical questions. The current Tough 75C FR Black page is evidence for that named formulation, not every black resin or finished electrical product. Verify thickness, conditioning, test classification, traceability and whether the complete enclosure or connector needs a separate recognition or compliance evaluation.

High-temperature labels need a time, load and cure context

High Temp 150C FR Black and HI TEMP 300-AMB are both validated, but they solve different jobs. A heat-deflection temperature is measured under a stated load and method; it is not automatically a continuous-use rating, an electrical RTI, a sterilization limit, a mold-life promise or evidence for a loaded production fixture.

The official HI TEMP 300-AMB material page describes the manufacturer's intended high-temperature applications and test data. Before choosing it, define peak and continuous temperature, load at temperature, dwell, cycles, contact chemistry, dimensional allowance and acceptable aging. Follow the exact wash, dry and post-cure sequence because residual resin and cure state can change the usable result.

If flame performance is the governing requirement, start from the exact named FR resin and the required thickness-specific evidence. If dimensional behavior under heat governs, compare the relevant material data and validate the finished geometry. Do not choose by whichever product name contains the largest temperature number.

Flexible, rubber-like and composite choices are not interchangeable

FLEX-BLK 20 is on the live validated list. RUBBER-65A BLK appears in the current brochure but not that footnote, so it needs exact-machine confirmation. Neither label proves a seal, bellows, grommet, living hinge or repeated-compression part. Define hardness, elongation, tear path, compression set, fluid contact, temperature, outdoor exposure, cycle count and inspection method.

Rigid Composite White is also brochure-listed but absent from the live validation footnote. “Composite” does not reveal a universal wear, stiffness, dielectric or machining outcome. Obtain the current datasheet and 135 release, then test the actual feature and post-process. A filled resin may also change settling, mixing, tray inspection, cleaning and waste procedures.

For a large-format resin decision rather than this small-part production envelope, compare the Formlabs Form 4L material router. For a closed-workflow desktop resin route, review the HeyGears Reflex 2 material guide. Those pages own different machines and workflows; their resins do not transfer to the Figure 4 135.

Eggshell and casting materials require downstream proof

EGGSHELL AMB 10 is validated for sacrificial tooling used to cast silicone. The print is an intermediate, so compatibility includes drainage, cleaning, shell removal, inhibition risk, surface transfer, venting and the silicone manufacturer's procedure. A successful printed shell does not guarantee the final mold's dimensions or service life.

JCAST GRN 20 is shown as a compatible material card on the current product page and has a current official material route, but it is omitted from the page's validated-material footnote. Treat that mismatch as a written-confirmation gate. Jewelry casting also depends on pattern handling, investment, flask, burnout schedule, furnace ventilation, alloy, sprue design and foundry practice. The printer does not qualify that complete process by itself.

These two routes should not be collapsed into “castable resin.” One is positioned as a removable shell for silicone molding; the other is a pattern for investment casting. Their failure modes, downstream temperatures, chemistry and acceptance criteria differ.

Resin, washing, UV and facility safety boundaries

Uncured photopolymer, contaminated tools and wash liquid require chemical controls. Follow the current 3D Systems operating instructions and the exact resin safety data sheet for gloves, eye and skin protection, ventilation, spill response, storage, incompatibilities and disposal. Keep food and drink out of the work area, cover resin when not in use, and do not wash uncured residue into a sink.

Washing can introduce flammable or otherwise hazardous solvents. Use only the approved chemistry and equipment, control ignition sources, keep containers closed, and follow local fire, electrical, ventilation and hazardous-waste requirements. UV post-curing adds intense light and heat; use the manufacturer's guarded equipment and cycle rather than an improvised exposure. Do not look into active UV sources or bypass interlocks.

NIOSH additive-manufacturing guidance recommends applying the hierarchy of controls, including enclosure and local exhaust where appropriate, plus housekeeping, PPE and exposure assessment. That framework does not replace the Figure 4 135 manual, a resin SDS, the wash and cure instructions, an industrial hygienist, the fire authority or the responsible site safety organization. GoodPrints is not the final chemical, fire, electrical or occupational-safety authority.

Changing resin is a controlled process, not just a fast tray swap

The product page promotes fast material changeovers and automatic resin supply. That can reduce operator time, but a production change still needs the approved drain, clean, inspect and refill procedure. Track the tray or membrane condition, resin identity and batch, cartridge or bottle, expiration and storage state, filter or mix instructions, printer and profile version, build platform, wash bath condition and cure program.

Cross-contamination matters even when two resins look similar. A trace of flexible, filled, flame-retardant, castable or high-temperature resin may change cure, color, surface or properties. Dedicate or clean components according to the manufacturer, quarantine uncertain material and never pour used resin back into clean stock unless the exact instructions permit it.

The machine's traceability features can associate printer, material batch and production time, but the owner still needs a controlled record and acceptance plan. Traceability records what was used; it does not prove that the selected resin, profile or part design was suitable.

Finished-part claims need their own qualification

3D Systems publishes accuracy, repeatability, speed and material-performance claims for defined conditions. Those are manufacturer claims, not independent testing of every geometry, operator, resin lot or workflow. The brochure's tolerance and productivity examples should not be converted into a universal tolerance, throughput, cost or guaranteed business result.

Preserve the actual build and finishing record: machine and maintenance state, software and profile version, resin SKU and lot, tray, orientation, supports, layer setting, wash chemistry and time, dry state, cure unit and cycle, finishing, inspection and environmental conditioning. Thin walls, holes, snap features, support scars, trapped resin, cure shadowing and assembly stress can govern sooner than a headline material value.

Electrical, flame-rated, aerospace, medical, food-contact, skin-contact, optical, pressure, lifting and vehicle-control parts need their applicable standards and responsible approval. A resin described as biocompatible-capable or flame-retardant does not make every printed part compliant. The exact material, post-process, geometry, thickness, cleaning, traceability and intended use all remain in scope.

Buyer and owner decision

• Choose the Figure 4 135 when the recurring work is small, precise photopolymer parts and at least one current validated resin fits the real load, environment and compliance path.
• Start with the nine live validated materials and lock the exact 3D Sprint profile, supply format, wash and cure workflow before promising production.
• Pause for written confirmation when the job depends on JCAST GRN 20, Tough 65C Black, RUBBER-65A BLK, Rigid Composite White or another resin absent from the live validation footnote.
• Choose a different platform for filament, powder, pellet, wire, paste, metal or an unqualified third-party photopolymer. The EXT 220 MED owns a medical high-temperature filament decision, while the DMP Flex 350 Triple owns industrial metal powder.
• Outsource first when demand is intermittent or the team does not want to own resin handling, washing, curing, ventilation, chemical records, waste and part qualification.

For a defined part, start with the material-selection checklist, review the custom-printing service FAQ, request a GoodPrints quote, or use the JC Print Farm route when an external production path is a better fit than owning the workflow.

Bottom line

The clean current starting set is the nine materials in the Figure 4 135 page's validated footnote. The February 2026 brochure widens the conversation to four more resins, but the mismatch requires exact profile, packaging and regional confirmation. Every useful choice remains conditional on the named resin and lot, authorized software profile, tray and supply method, washing, drying, post-curing, chemical and facility controls, traceability and finished-part evidence.

Official sources checked

• 3D Systems Figure 4 135 product page for the current exact-model validated footnote, promoted materials and workflow claims.
• February 2026 Figure 4 135 brochure for the broader exact-model material list, supply-format and specification context.
• Figure 4 Tough 75C FR Black, PRO-BLK 10 and HI TEMP 300-AMB for current manufacturer material context.
• Figure 4 JCAST-GRN 20 for its current material route, kept behind the exact-machine confirmation gate.
• NIOSH: Approaches to Safe 3D Printing for source-control and exposure-reduction boundaries.