LAB READY
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Use SLA for detail and appearance
Smooth resin parts support visual models, ergonomic reviews, access studies, master patterns and early mating checks.
SLA & SLS
Medical device 3D printing with SLA and SLS
Choose high-detail resin for visual and fit evaluation or durable nylon for functional handling and complex unsupported geometry.
Capability Overview
Plastic 3D Printing built around the application
SLA and SLS support different manufacturing requirements. SLA plastic parts use a cured resin process suited to smooth, detailed models where appearance, access and fit are the priority. SLS produces durable nylon parts without conventional support structures, making it useful for functional handling, snap fits, interlocking geometry and more demanding fit checks. The correct medical device 3D printing route follows the drawing, application and evaluation requirements.
SLAHigh-detail resin parts
SLSDurable functional nylon parts
Fast iterationMove from CAD to physical evaluation
Complex geometryNo traditional tooling required
Planning the Work
What matters before manufacturing starts
Process selection should follow the drawing, application, material, critical features and the condition in which the part needs to arrive.
2
Use SLS for functional handling
Nylon SLS parts are suited to snap fits, complex assemblies and components that need more robust handling than a visual resin model.
3
Move to the next process at the right time
When the design must prove final alloy behavior, precision surfaces or production material, the workflow can move to CNC machining, metal additive or molding.
Typical Applications
Where this capability fits
Visual design models
Ergonomic studies
Instrument handle concepts
Snap-fit components
Complex nylon assemblies
Early mating-component checks
Related Guidance
Continue planning the part
Use these pages to connect the process with the device category, material and next project decision.
Frequently Asked Questions
Plastic 3D Printing questions
Should a part use SLA or SLS?
Choose SLA when fine detail and a smooth visual model matter most. Choose SLS when the part needs durable nylon, complex geometry or functional handling.
How is SLS used for medical device parts?
SLS can produce durable nylon parts for functional handling, snap fits, complex assemblies and fit checks. It does not by itself establish final material suitability or replace the device manufacturer's verification and validation.
When is an SLA prototype useful?
An SLA prototype is useful when a team needs a smooth, detailed resin model for appearance, access, ergonomic or early fit evaluation before choosing a later production-representative process.
Can plastic printing be used for fit checks?
Yes. Both processes can support fit evaluation, with the choice driven by detail, surface, geometry and expected handling.
When should a design move from printing to molding?
Molding becomes relevant when the design is stable, production-representative resin and repeatability matter, and the expected quantity supports tooling.
Have a part ready to review?
Send the CAD, quantity, material, finish and target date for a process review and quote.