MoonRay S

The MoonRay S is a DLP 3D printer from SprintRay with a 127 x 81 x 200 mm build volume.

Specifications

SprintRay MoonRay S: Technical Specifications

Technology and Light Engine

MoonRay S is a DLP photopolymer 3D printer using a Texas Instruments DMD chip at 405 nm (blue-violet) LED. SprintRay's patented RayOne UV projector is engineered for stable power output and uniform light dose distribution across the entire build platform. Unlike laser SLA, DLP exposes a complete layer in a single flash, giving constant layer time regardless of part count.

Optics and Resolution

1280×800 pixel array over a 127 × 81 mm build area yields 100 µm XY pixel pitch. Achieved dimensional accuracy is ≤50 µm: the gap between pixel pitch and accuracy is bridged by sub-pixel anti-aliasing.

Calibration

Calibrating the SprintRay MoonRay S

• Build platform leveling: Lower to Z-zero, loosen mounting screws, and level to full parallelism with FEP. Tip: for dental resins, warm to 27 °C before leveling.
• Bottom exposure (dental materials): Set 5–8 base layers at 3–5× normal exposure duration. Target: solid adhesion of supports or direct platform contact. Tip: use SprintRay Cloud validated profiles for biocompatible resins.

3.

Common defects

Common Defects on the SprintRay MoonRay S

Support delamination: Dental supports detach mid-build. Cause: small contact area or fast lift speed with tacky resins. Fix: increase contact tip diameter to ≥0.5 mm; reduce lift speed to 2 mm/s.

Flat-part warping: Surgical guides or base plates curl after printing. Cause: polymerisation shrinkage stress on thin horizontal cross-sections. Fix: tilt 15–25°; add peripheral supports.

What it is used for

Use Cases and Anti-Cases for the SprintRay MoonRay S

Ideal applications:

• Surgical implant guides: Consistent ≤50 µm accuracy; 127 × 81 mm platform = 4–6 guides per run.
• Occlusal splints: 200 mm Z allows full-arch splints in one orientation.
• Diagnostic models (educational clinics): Fast batch of multiple anatomical models.