TPM3D S320HT

The TPM3D S320HT is an SLS 3D printer from TPM3D with a 320 x 320 x 380 mm build volume.

Specifications

TPM3D S320HT: Technical Specifications

Laser

60W CO₂ laser with 3-axis dynamic focusing; maximum scan speed 13,000 mm/s. Wavelength ~10.6 µm (typical CO₂), optimised for thermoplastic powders.

Build Volume

Two interchangeable build chambers: 320×320×380 mm (primary) and 250×250×380 mm (alternative for smaller, thermally demanding geometries).

Chamber & Temperature

Maximum chamber temperature 350°C: critical for PEEK and PEKK processing. Active enclosure with precision thermal management; Smart Blade recoater for uniform powder distribution.

Layer & Accuracy

Layer thickness 60–200 µm. Accuracy is material- and geometry-dependent.

Materials.

Calibration

Calibration Protocol: S320HT

1. Chamber Thermal Stabilisation

Heat to operating temperature (330–350°C for PEEK) with at least 90 min settle time. Monitor integrated sensors for uniformity.

2. Laser Spot Verification

Check spot diameter and energy distribution at 9 points using a calibration target. Expected deviation below ±5%. 3-axis dynamic focusing compensates for field curvature.

3. Z-axis at Operating Temperature.

Common defects

Typical Defects and Corrections: S320HT (HT-SLS)

Orange-peel surface texture

Insufficient chamber temperature or laser power. Increase by 5–10°C or 5% power. Check powder layer uniformity.

Warping during cooling

Rapid post-build cooling induces residual stresses in crystalline PEEK. Program controlled cooling ≤1°C/min. Orient long axes horizontally.

Internal porosity

Moist or under-heated powder. Dry PEEK at 150°C for 4 hours. Increase energy density (Ed) by 10%.

What it is used for

Use Cases: TPM3D S320HT

Aerospace Structural Parts

PEEK withstands >250°C and aggressive media with aluminium-comparable strength-to-weight ratio. Suitable for brackets, masking tools, and rocket components.

Medical Implants

Radiolucent, biocompatible (ISO 10993), sterilisable at 134°C. Enables patient-specific PEEK implants directly from CT data.

University R&D.