Introduced as the legacy FullCure810 trade name for the RGD810 resin architecture, the Proto3000 Objet VeroClear FullCure810 product designation refers to a transparent, rigid UV-curable acrylic-based photopolymer supplied in sealed 3.6 kg cartridges for PolyJet material jetting platforms. The cartridge is specified for Objet Eden and Connex class systems. Build operations deposit 16 µm or 30 µm layers of photocurable resin onto the build tray, with UV lamps curing each layer before the next deposition sequence. Post-curing is not required; the part reaches its as-printed mechanical state after support removal and ambient conditioning. The material is used for transparent rigid prototypes, fluid-flow visualization manifolds, optical-path mock-ups, light pipe housings, and short-run medical device housing prototypes where optical clarity is required after polishing. As-printed surfaces are translucent until finishing removes layer topography and support contact marks. The cartridge should be stored in a climate-controlled environment below 30 °C and equilibrated to the print-head operating temperature before jetting. This material is not a direct substitute for cast PMMA in all thermal or optical service conditions.

FullCure810 Mechanical and Thermal Operating Bounds

Reported mechanical property ranges for the RGD810 formulation are consolidated from manufacturer data using ASTM methods. The values in Table 1 are laboratory values generated from specimens printed in the recommended orientation and should not be read as unconditional design allowances. Production parts require orientation-specific tensile and flexural testing because material jetting produces anisotropic behavior in the Z axis. The tensile modulus of 2.0–3.0 GPa places the material in the rigid unfilled resin class, while elongation at break of 10–25% indicates limited ductility under tensile load. The notched Izod range of 20–30 J/m is below that of many engineering thermoplastics, so snap fits, clips, and sharp internal corners require adequate radii. Thermal performance is constrained by the heat deflection temperature of 45–50 °C at 0.45 MPa; this ceiling rules out autoclave sterilization, hot-water manifold testing, and continuous exposure to engine-compartment heat. The material should not be specified for sustained load at temperatures above 40 °C unless part-specific creep testing under ASTM D2990-17 has been performed.

Property	Test method	Published range
Tensile strength	ASTM D638-14	50–65 MPa
Elongation at break	ASTM D638-14	10–25%
Tensile modulus	ASTM D638-14	2.0–3.0 GPa
Flexural strength	ASTM D790-17	75–110 MPa
Flexural modulus	ASTM D790-17	2.1–3.2 GPa
Heat deflection temperature at 0.45 MPa	ASTM D648-16	45–50 °C
Heat deflection temperature at 1.82 MPa	ASTM D648-16	45–50 °C
Notched Izod impact	ASTM D256-10	20–30 J/m
Shore D hardness	ASTM D2240-15	83–86
Water absorption after 24 h	ASTM D570-98	1.1–1.2%

When Transparent PolyJet Parts Replace Machined Acrylic Prototypes

Substitution of cast or extruded PMMA with FullCure810 is viable only when the thermal load is below 45 °C and when the application does not require the optical homogeneity of cast sheet. Cast PMMA heat deflection temperature is typically near 95–100 °C at 1.82 MPa; FullCure810 begins to lose load-bearing capability at approximately half that temperature. The PolyJet formulation enables internal channels, undercuts, and complex optical-path geometry that subtractive machining cannot produce, but the printed material is anisotropic. Datasheet tensile values are generated from specimens printed in the recommended orientation; through-plane strength and elongation should be verified on sacrificial builds before load-bearing deployment. Chemical exposure introduces a further boundary. Aromatic hydrocarbons, ketones, esters, and chlorinated solvents can craze or soften acrylic-based networks; chemical compatibility should be screened under ASTM D543-20 on polished and as-printed coupons. Prolonged UV exposure without a UV-stable clear coat tends to yellow the material, so outdoor-like exposure requires part-specific weatherometer screening under ASTM G154-23 or equivalent. For medical device prototyping, the material is not supplied with implantable or food-contact certification; regulatory confirmation must be obtained from the cartridge supplier for the target jurisdiction. Support structures on PolyJet platforms are generated with a sacrificial water-removable support material, typically SUP705 or SUP706. The support is removed after build using a pressure waterjet station; narrow channels and blind cavities may require extended waterjet dwell time or ultrasonic agitation. Removal of support residue from internal surfaces is a process bottleneck for manifolds with channels below 2.0 mm in diameter. Cleaning is performed with mild soap solution and water; solvent cleaning is avoided because acrylic-based photopolymers are sensitive to stress cracking. After cleaning, the part is dried at ambient temperature or in a desiccant chamber below 40 °C before polishing or coating. Residual moisture in parts stored at relative humidity above 60% can cause coating defects; published data for this specific configuration is limited, but production practice is to condition parts for 24 h in a dry environment before clear-coating. Unpolished surfaces retain layer boundaries of 16 µm or 30 µm, which scatter transmitted light and produce a translucent rather than transparent appearance.

Optical Clarity Is a Post-Processing Outcome, Not an As-Printed Property

Transparent appearance in VeroClear FullCure810 requires deliberate surface finishing; the PolyJet process does not produce optically clear external surfaces. Layer steps, support contact marks, and jetting witness lines create scattering centers that reduce direct transmittance and raise haze. The manufacturer describes the material as transparent after finishing, but does not publish spectral transmittance curves or yellowness index for the cartridge-level product. Optical acceptance should therefore be based on part-specific measurements conducted according to ASTM D1003-21 for haze and luminous transmittance and ASTM E313-20 for yellowness. In flow-visualization modules, internal channel surfaces are difficult to polish; boundary-layer visualization may require polishing internal surfaces with abrasive slurry or coating with an index-matched clear lacquer, with the caveat that coating thickness modifies channel dimensions. For optical components such as lenses and light pipes, the design should incorporate post-polish dimensional allowance of 0.05–0.15 mm per surface, depending on sanding depth. The absence of published refractive index data means that prototype lens design cannot rely on catalogue optical constants; Abbe refractometry or spectroscopic ellipsometry should be used to establish the working index for each resin batch. Bonding of polished VeroClear parts with cyanoacrylate adhesives is possible but may induce whitening if residual support or moisture is present. Two-part acrylic adhesives and UV-curable optical adhesives are preferred for clear assembly when low-stress bonds are required. The compatibility of any adhesive should be screened under ASTM D2093-17 using polished plaques. Clear-coat systems selected for UV stability should be tested for intercoat adhesion under ASTM D3359-17 after 48 h water immersion. Because water absorption is 1.1–1.2% after 24 h under ASTM D570-98, dimensional change in humid environments is measurable. For parts held to ±0.05 mm tolerances, conditioning at 23 °C and 50% RH for 48 h before inspection stabilizes the moisture state. For channel features below 1.0 mm, dimensional control in 16 µm high-quality mode is tighter than in 30 µm high-speed mode, but build time increases. The PolyJet process deposits build material and support simultaneously; the largest sources of dimensional error are support removal, thermal contraction during cooling, and cleaning-induced erosion. Validation of a given feature size should use test coupons with holes, bosses, and channels measured by coordinate measuring machine before committing to production. Published data for the specific cartridge-level dimensional tolerance of Proto3000 Objet VeroClear FullCure810 is limited; platform-level calibration and part-specific capability studies under ISO 10360-5:2020 or equivalent coordinate measurement standards are required. Thin walls below 1.0 mm may warp during post-processing due to residual stress and water absorption. Features intended for press-fit or snap-fit must include allowance for the material’s notch sensitivity; finite element models should use the measured tensile modulus and ultimate strain from the datasheet rather than generic PMMA data.

PolyJet Process Failure Modes for FullCure810

Process capability is influenced by UV lamp output, print-head jetting quality, and ambient conditions. A decline in UV irradiance below the service threshold produces undercured layers that exhibit lower hardness and reduced transparency. Missing jets from partially clogged nozzles create voids and weak interfaces between adjacent tracks. These defects are not always visible on as-printed parts but become apparent after polishing or tensile loading. Batch acceptance should therefore include a tensile coupon printed at the same orientation and layer height as production parts, tested under ASTM D638-14, and a visual or ASTM D1003-21 haze plaque. On production lines with mixed material cartridges, cross-contamination between RGD810 and support material can generate hazy inclusions in transparent sections; purging cycles should follow the platform manufacturer’s procedure after cartridge changes. The process is sensitive to cold resin; cartridges should be equilibrated to the print-head operating temperature before starting a build. Moisture condensation on cold cartridges in humid environments can introduce water into the resin with adverse effects on cure and clarity; cartridges should be allowed to equalize to ambient temperature before unsealing if stored below 15 °C.

How Does FullCure810 Differ from RGD720 and VeroUltraClear?

FullCure810 occupies a middle position within the transparent PolyJet portfolio. RGD720 is a general-purpose transparent material with lower rigidity and is specified where post-finishing clarity is secondary. VeroUltraClear is a later-generation transparent formulation intended for reduced haze and improved clarity with a similar rigid profile, but its mechanical data must be verified separately because it is not identical. FullCure810 offers a tensile strength range of 50–65 MPa and a Shore D hardness of 83–86, which are sufficient for static display models and rigid fluidic prototypes but not for load-bearing optical assemblies subject to impact. Compared with opaque VeroWhitePlus, FullCure810 provides transparency after finishing but generally requires more post-processing labor per part because surface defects are visible through the wall. Compared with cast PMMA, FullCure810 has lower HDT and is not recommended for sustained outdoor exposure without a UV-stable clear coat. The material is not intended for food-contact or implantable use; regulatory status should be confirmed under the relevant application-specific standard before production. In flow-visualization fixtures, FullCure810 is frequently selected for external transparency after polishing. The build should orient channels vertically or near vertical to minimize support entrapment; horizontal channels below 3.0 mm may require sacrificial design changes or split-part assembly. Service-bureau experience indicates that batch-to-batch variation in resin viscosity and UV lamp output can produce small changes in transparency and part hardness. Each new lot should be qualified with a tensile coupon per ASTM D638-14 and a haze plaque per ASTM D1003-21 before production resumes.