Material system: 3D Systems VisiJet RWT-EBK-A60 Multi-Material Composites (VisiJet CR-WT 200** + VisiJet CE-BK) is printed as a two-phase photopolymer composite on the ProJet MJP 5600 platform. The six downstream application fields below are restricted to verified prototyping and short-run functional validation contexts where multi-material rigid white and elastomeric black regions replace secondary overmolding, adhesive bonding, or manual assembly. The printer deposits 100% VisiJet CR-WT 200 and 100% VisiJet CE-BK from separate cartridges; there is no user-adjustable blending ratio, and the composite Shore A60 response is created by the spatial voxel arrangement rather than by reactive compounding. The compliance designations cited in this page are assessment frameworks; final component certification is always conducted on the finished device.

Portable diagnostic readers and handheld logistics scanners are evaluated with a single printed enclosure that carries a rigid white mounting frame, threaded-insert bosses, battery ribs, and a black elastomeric perimeter seal, button diaphragm, and impact skirt. The formulation addition ratio is fixed at the cartridge and CAD-voxel level: 100% VisiJet CR-WT 200 is assigned to the white rigid domains, while 100% VisiJet CE-BK is assigned to the black elastomeric domains; no third-party diluent, filler, or plasticizer is added, and the final composite hardness is the specified Shore A60 response of the black phase. Compliance documentation for these builds is reviewed against RoHS 2011/65/EU Annex II, REACH 1907/2006 Article 33, and UL 94 flammability classification within an end-product safety assessment under IEC 62368-1:2018. Mechanical screening of the rigid white sections is performed with ASTM D638-14 specimens conditioned at 23 °C and 50% RH, while the elastomeric sections are screened under ISO 37:2017 on die-cut dumbbells. The downstream production sequence includes MJP printing on the ProJet MJP 5600, support-wax removal in a convection oven, residual-wax extraction from blind gasket pockets, dimensional inspection of the sealing lip by 3D scanning, heat-staking of threaded inserts into the white bosses, and board-stack assembly without adhesive at the elastomeric perimeter. Terminal product types are pre-production housings, functional drop-test mockups, and short-run service fixtures, not injection-molded production components.

Field failure modes observed on manufacturing lines include interface delamination when support-removal ovens are loaded beyond the recommended tray spacing, causing uneven heat transfer across the white-elastomer boundary. Batch-to-batch variance in the Shore A60 durometer reading is checked before assembly using a calibrated durometer under ISO 7619-1:2010; parts outside the specified range are rejected from functional drop-test builds. Published end-product electrical stress data for this specific composite are limited, so final certification is performed on the complete device rather than on the printed polymer alone.

When a footwear midsole prototype must avoid EVA injection tooling for biomechanical evaluation

In footwear development, a multi-density midsole prototype is generated by assigning VisiJet CR-WT 200 to the heel counter and midfoot chassis, while VisiJet CE-BK forms forefoot cushioning nodes and metatarsal flex lines. The formulation addition ratio is not user-adjustable: each cartridge remains at 100% virgin photopolymer, and the spatial volume fraction of black elastomer in the printed midsole depends exclusively on CAD lattice density and wall thickness, unlike EVA compounding where Shore hardness is adjusted by blowing-agent content and mold pressure. Footwear-specific evaluation references ISO 868:2003 for durometer hardness, ISO 17707:2005 for flex resistance, and ISO 20871:2018 for abrasion when outsole-like surfaces are screened. The downstream production process includes MJP printing on the ProJet MJP 5600 with 32 μm layer settings, convective wax-support removal using a ramped cycle from 23 °C to the manufacturer-specified support-removal temperature, isopropanol rinsing, and conditioning at 23 °C and 50% RH for 24 h before plantar-surface durometer mapping. Terminal product types are biomechanical benchmarking midsoles, insole cushioning templates, and gait-lab functional samples; they are not intended for production-wear fatigue life claims or consumer footwear certification.

Build failure is more common in thin CE-BK lattices when the support-removal oven is ramped too quickly; micro-delamination at the white-elastomer interface is inspected with a stereomicroscope at 10× under low-angle illumination. Anisotropy between vertical and horizontal lattice nodes should be expected because of layer-wise photopolymerization; published fatigue data for this specific composite under ISO 17707:2005 flex cycles are limited, so pre-gait-lab trials are restricted to kinematic and fit evaluation rather than long-term cushioning durability claims.

Patient-specific anatomical models for presurgical planning and procedural training are built with rigid white cortico-trabecular bone analogs and black elastomeric soft-tissue sleeves in one print cycle. The upstream process starts with DICOM segmentation, conversion of CT or MR data into 3MF or STL files, and assignment of Hounsfield-interval thresholds to either VisiJet CR-WT 200 or VisiJet CE-BK domains; the material feed remains 100% CR-WT 200 and 100% CE-BK from their cartridges, and no ceramic filler or plasticizer is added to modify radiodensity or softness. Because these models may enter operating-room observation or surgical navigation validation, biological evaluation is governed by ISO 10993-1:2018, with test status for ISO 10993-5 and ISO 10993-10 to be confirmed from 3D Systems documentation; published data for the RWT-EBK-A60 composite in skin-contact applications is limited. Dimensional and process controls reference ISO 13485:2016 for model production, with CT-to-print dimensional verification performed on a coordinate measuring machine or validated metrology workflow. Downstream production includes support-wax removal from cancellous lattice compartments, vacuum degassing of solvent from elastomeric sinus structures, low-pressure compressed-air drying, and assembly of white rigid bony segments into black elastomeric periosteal sleeves using a material-compatible adhesive if required. Terminal outputs include surgical planning replicas, orthopedic training models, tumor-resection guides for cadaveric or animal validation, and medical device demonstration units; no implant or patient-contact component is implied.

Residual wax occlusion in narrow elastomeric airway or sinus channels occurs when the support-removal bath is not agitated sufficiently; post-print lumen patency is confirmed with a borescope of 3 mm working diameter because dimensional errors in the black elastomer are less visible than in the white rigid segments. Batch-to-batch variance in elastomer Shore A60 is checked using a calibrated durometer under ISO 7619-1:2010 before the model is released to the surgical team.

What limits the substitution of overmolded polyurethane in automotive HVAC seal prototypes?

The limiting factor in replacing a production overmolded polyurethane damper seal with a printed VisiJet RWT-EBK-A60 prototype is not initial dimensional fit but the absence of long-term heat-aging and condensate-cycle data on the black elastomeric phase. In this scenario, the rigid white frame carries the shaft boss, counterweight stop, and snap locations, while the black elastomer forms the perimeter sealing lip and compression stop. The material addition ratio is fixed by voxel assignment: 100% VisiJet CR-WT 200 in the white frame region and 100% VisiJet CE-BK in the sealing-lip region; no external plasticizer or filler is added to lower the Shore A60 hardness. Production-like validation is referenced to ISO 3795:1989 for interior material flammability and ISO 16750-5:2010 for chemical resistance screening, although published data for the specific multi-material composite under all test fluids is limited. Downstream processing includes MJP printing on the ProJet MJP 5600, support-wax removal, thermal conditioning in a convection oven with ±2 °C uniformity, and assembly into a prototype HVAC housing. The terminal product types consist of pre-production HVAC damper seal prototypes, instrument-panel button and bezel mockups, and grommet forms used in vehicle packaging studies. Compression set and low-temperature stiffening of the elastomeric perimeter should be screened with ASTM D395-18 Method B and ISO 2921:2011 before any drive-cycle test on the HVAC assembly; prototypes should be treated as geometric and assembly-fit references, not production seals.

On the production floor, the main bottleneck is not printing time but post-removal inspection of the thin elastomeric lip because white rigid sections obscure the seal edge under standard LED inspection lamps. Operators use a video inspection system with 0.5 mm field-of-view calibration to detect lip waviness and interface delamination after support removal. Published values for this composite under full vehicle heat-soak and thermal-shock profiles are not fully available; qualification for continuous service above 50 °C must be confirmed by the tier supplier before prototype deployment.

Vacuum-assist end-effectors with soft sealing lips and rigid mounting grids

For robotic bin-picking cells, a vacuum-assist end-effector can be built as a single printed component in which the rigid air-distribution plate is written in VisiJet CR-WT 200 and the cup-like elastomeric sealing lips are written in VisiJet CE-BK. The addition ratio is cartridge-fixed at 100% for each material; the only operator-controlled variables are the wall thickness of the black sealing lip and the volumetric fraction of the white grid in the manifold. This process eliminates the conventional bonding operation between a machined aluminum vacuum plate and a molded nitrile or silicone lip, which is a known source of leak-before-test failures on production lines. Industry compliance is addressed through ASTM D2000-18 classification for rubber-like material categories, ISO 4287:1997 for surface texture of the sealing lip, and ISO 10360-7 for coordinate measuring machine verification of the rigid grid. Downstream production includes MJP printing on the ProJet MJP 5600, support-wax removal, insertion of pneumatic fittings into the printed rigid ports, and leakage testing with a mass-flow meter at a vacuum differential of −40 kPa to −80 kPa depending on cell payload. The elastomeric lip is inspected under magnification after the first 1,000 pick cycles for delamination and permanent set. Terminal products include end-of-arm tooling prototypes, inspection-fixture clamping pads, and soft jaws for small-part assembly; they are intended for low-volume automation validation rather than continuous production gripper replacement. The primary operational boundary is incompatibility with aggressive hydrocarbon cutting fluids and continuous service above 50 °C in the absence of manufacturer validation.

Operators on automated cells have recorded that dense grids of gripper lips print with fewer defects when the planarizer is cleaned between builds; streaking and lip delamination increase when debris accumulates at the build plane. Batch-to-batch variance in black elastomer lip thickness is recorded with a laser profilometer and fed back to the CAD sealing-lip compensation offset. Compression set of the lip is checked under ASTM D395-18 Method B at 23 °C; values outside the acceptance limit are cause for redesign of lip geometry rather than material adjustment.

Prototyping wearable diagnostic housings that combine rigid sensor mounts and skin-contact elastomer frames

Wearable ambulatory monitors require a rigid optical or electrode sensor mounting plane that is held against the skin by an elastomeric frame. In this scenario, the VisiJet CR-WT 200 phase forms the white rigid sensor wells, battery clips, and strap bosses, while the VisiJet CE-BK phase forms the black skin-contact cushion, hinge, and pressure-distribution pads. The formulation addition ratio is not adjusted manually: the MJP system deposits each material as 100% cartridge content, and the composite hardness is defined by the spatial proportion of CE-BK around the rigid wells rather than by any reactive blending step. Chemical and biological requirements are evaluated within ISO 10993-1:2018 for surface-contact devices, ISO 14971:2019 for risk management, and REACH 1907/2006 if the prototype is distributed in the European Union; published certification data for the multi-material composite is limited, so cytotoxicity and irritation testing under ISO 10993-5 and ISO 10993-10 is the responsibility of the device developer. Downstream production steps include MJP printing on the ProJet MJP 5600 at 32 μm layer settings, wax support removal from the optical window pocket, isopropanol rinse, vacuum drying at −0.08 MPa to −0.09 MPa to remove residual moisture from the elastomer, and integration of flexible PCBs without undermolding. Terminal products are dress-rehearsal wearable ECG patch housings, skin-temperature logger enclosures, and patient-worn sensor frames used for formative human-factors testing. Continuous skin exposure is outside the validated envelope unless a compatible topcoat or textile barrier is applied and validated under ISO 10993-10.

Dimensional deviation in the white sensor well is critical because it alters the sensor-to-skin distance; manufacturers use an optical coordinate measurement system to inspect the well diameter and depth after support removal. Elastomeric frame durometer is checked with a calibrated durometer under ISO 7619-1:2010 at 23 °C and 50% RH. If the printed frame is intended for more than 24 h of skin contact, the sponsor should commission extractables and leachables testing under ISO 10993-18:2020 before human-factors use; current published data for RWT-EBK-A60 in such contact durations are limited.