Kings 3D SLA 450 Pro

The Kings 3D SLA 450 Pro is an SLA 3D printer from Kings with a 450 x 450 x 350 mm build volume.

Specifications

Laser

The SLA 450 Pro uses a 355 nm solid-state Nd:YVO4 laser with minimum surface power ≥300 mW: more stable and longer-lived than Nd:YAG at 355 nm frequency.

Scanner and Optics

Galvanometric scanner with maximum speed 15,000 mm/s (15 m/s): among the fastest in the 450 mm build-size class. Minimum beam diameter 0.08 mm for fine-feature work.

Accuracy

±0.1 mm positional accuracy for features ≤100 mm; repeatability ±0.01 mm between consecutive prints.

Platform

Industrial frame with ball-screw Z drive; layer thickness 0.05–0.15 mm.

Build Volume

450 × 450 × 350 mm.

Warranty

2 years on laser module and main chassis: unusually generous for industrial SLA.

Calibration

Laser Power and Spot Size

Measure surface power (target ≥300 mW) with a calibrated power meter; verify 0.08 mm spot size with a burn-paper test. Perform after any F-theta lens replacement.

Galvo Geometric Calibration

Print a NIST-style calibration grid; measure deviations; enter correction coefficients in software. Target: ±0.1 mm, repeatability ±0.01 mm.

Z-Levelling

Four-point levelling with a dial indicator; parallelism ≤0.05 mm with full vat loaded.

Common defects

Loss of Thin Features under 0.5 mm

Over-exposure or galvo drift. Fix: reduce energy by 10–15%; perform galvo calibration.

Suction Cup Delamination

Excessive pull-off force on flat bases. Fix: drainage holes in the base plus gradual lift speed increase.

Orange-Peel on Vertical Walls

Scan speed too high for cure depth. Fix: reduce scan speed or increase exposure time.

Post-Cure Warping

Residual stresses. Fix: rotating UV chamber plus fixturing jig for thin-walled parts.

What it is used for

Automotive Fit-and-Form Prototypes

±0.1 mm accuracy and ±0.01 mm repeatability for assembly tolerance checks.

Dental and Medical Prototypes

0.08 mm spot size for diagnostic models and surgical guides.

Medical Devices

Biocompatible 355 nm resins for functional prototypes.

Consumer Electronics Housings

Snap-fit and precision mechanisms with high repeatability.