3Dresyn Circular RePrint Bio, Depolymerisable Circular 3D resin triggered at 80 or 150ºC

This is a 100% circular, bio-positioned 3D resin for SLA, DLP and LCD printing at 385–405 nm that prints solid parts and later depolymerises back to a reusable syrup under a controlled thermal trigger.

Two grades are described: DP80, with a warm trigger around 80 °C, and DP150, with a high-temperature trigger around 150 °C. The system is positioned for circular printing and material recovery workflows.

Designed for use in SLA, DLP and LCD systems at 385–405 nm within industrial and R&D environments. Intended for sacrificial molds and cores, reusable tooling and jigs, and circular printing workflows requiring controlled thermal depolymerisation and material recovery.

• Sacrificial molds and cores for CIM/MIM, investment casting and jewelry
• Reusable tooling and jigs that can be melt-out on demand
• R&D into circular printing and material recovery workflows

• Density: 0.90–1.20 g/cm³, depending on formulation and, where applicable, selected version (ISO 1675)
• Viscosity: optimized within the processing range required for the intended printing process and application
• DP80 trigger around 80 °C
• DP150 trigger around 150 °C
• DP80 activation: 70–90 °C warm bath or oven, 10–60 min depending on wall thickness
• DP150 activation: 135–160 °C oven, 10–60 min
• Exposure: +10–25 % vs. a clear engineering baseline
• Storage: 15–25 °C, dry, dark
• Shelf life sealed: 12 months
• Clear to slightly amber optics
• Clear to light-amber appearance
• Low odor
• Low shrink

• True circular workflow: liquid → printed solid → liquid (re-print)
• Clean thermal release
• Targeted trigger temperature for process flexibility (80 °C or 150 °C)
• Compatible with common 385–405 nm printers
• Rigid-tough window
• Heat-softening near the selected trigger temperature

• Exposure requires re-tuning of bottom and per-layer settings
• Post-cure: standard UV flood
• Avoid extreme over-post to keep the circular pathway efficient
• Exact time/temperature depend on geometry, post-cure, and heating method
• Validate on internal coupons
• Standard PPE (gloves, goggles, coat) and ventilation
• Keep out of sunlight during mixing/printing

• 100% circular
• Bio-positioned

Exact time/temperature depend on geometry, post-cure, and heating method—validate on internal coupons. Given its advanced technical nature and the fact that effective use may require formulation-specific adjustment and controlled process development, it is offered as part of 3Dresyns proprietary resin customization services.

This material is supplied as a professional manufacturing material and is not marketed as a finished medical device. Final part performance and suitability must be validated by the user according to the intended application.

Circular RePrint DP80 and DP150 are advanced depolymerisable photopolymers supplied as made-to-order, custom-developed materials rather than off-the-shelf stock grades. Effective use typically requires formulation-specific adjustment and controlled process development for the target geometry, printer and recovery workflow.

Applications such as sacrificial molds and cores, reusable tooling, and circular printing or material-recovery workflows are addressed as a custom development matched to the intended trigger temperature, exposure window and post-processing route.

For these cases, 3Dresyns develops and supplies this material according to customer specifications through the Customization Services program: Customization Services.

This technical datasheet should be used together with the relevant processing, calibration, safety and workflow documentation available in the 3Dresyns® Resources section.

Access the 3Dresyns® Technical Resources (IFU, calibration, CRT, post-processing and troubleshooting)