Raise3D RMS220——Affordable SLS 3D Printer for Batch Production

RMS220 is designed to bridge the gap between compact SLS systems and industrial SLS production. Compared with many small-format SLS printers, its advantages are mainly in part performance, speed, production capacity, and material flexibility.

First, RMS220 uses a 75 W fiber laser and a larger 220 × 220 × 350 mm build volume. Many compact SLS machines use 30 W or lower-power lasers, which can limit energy delivery, part strength, printing speed, and the ability to produce larger or batch-production parts. RMS220 is better suited for teams that need stronger parts, faster throughput, and the ability to print both batches and moderately larger components.

Second, RMS220 supports an open material strategy. Customers can choose a fully open-material version, which means they can work with selected or self-qualified materials without paying annual material authorization fees. This is important for companies that want to protect their product competitiveness, control long-term material costs, or use specific materials such as FDA-certified powders for regulated applications.

Dimensional accuracy in SLS is not a single fixed number. Even with leading industrial SLS systems, including EOS and other established platforms, accuracy is usually not published as one universal value—not because manufacturers are trying to hide it, but because SLS accuracy depends heavily on the material, geometry, nesting strategy, thermal behavior, and production workflow.

Similar to injection molding, the final tolerance comes from the combination of material behavior and process control. Flexible materials such as TPU can show more noticeable expansion or deformation, while PA11 can deliver higher accuracy on certain feature types and part geometries under suitable conditions.

For this reason, we help customers validate accuracy through sample printing. By testing representative parts, we can check real dimensional performance, identify which material is more suitable, and recommend the right process route for the application before moving into production.

Yes. RMS220 supports SLS printing in either air or a nitrogen-protected atmosphere. The appropriate atmosphere depends on the validated process for the selected material and the required surface quality and yield. Air can simplify preparation for materials with a validated air process and lower oxidation sensitivity; nitrogen should be used when the material is more oxygen-sensitive or when color, surface consistency, and batch repeatability are more demanding. Before production, confirm the atmosphere specified in the latest material profile and TDS, then validate it with representative parts.

The built-in nitrogen generator supplies a protective atmosphere for common nitrogen-printing workflows, reducing the need and installation cost for separate nitrogen-generation equipment. A compliant external compressed-air supply is still required. Whether the built-in capacity is sufficient depends on the material’s oxygen-limit requirements, the print job, and site conditions. Some PA11 processes or applications with stricter surface-quality and yield targets may still require a higher-capacity external or facility nitrogen supply; follow the latest Raise3D installation requirements and material process documentation.

A production-ready RMS220 setup typically includes the RMS220 printer, at least two Build Unit 220 units, a C220-P cleaning station, B520 blasting equipment, an industrial vacuum/dust-control solution, and the required compressed-air and site utilities. Two build units allow one unit to cool or be depowdered while the printer starts the next job with the other, reducing idle time. Depending on the material, throughput, finish requirements, and site conditions, the setup may also require powder storage and sieving containers, a polishing module, UPS, an external or facility nitrogen supply, PPE, and installation, training, and maintenance services. The final configuration should be confirmed with Raise3D or a local partner based on the application, material, and target production cadence.

If your local power quality is unstable, we may also recommend adding a UPS to help stabilize the power supply and protect the production process.

The final configuration should be selected based on your materials, production volume, surface finish requirement, facility conditions, and expected production schedule.