Farsoon Flight HT403P

The Farsoon Flight HT403P is an SLS 3D printer from Farsoon Technologies with a 400 x 400 x 450 mm build volume.

Specifications

Laser: Fiber laser (replacing CO₂ in the Flight series, launched 2019); smaller spot diameter and longer service life than the CO₂ equivalent; wavelength ~1 µm (Nd:YAG / Yb:fiber class).

Optics / Scanner: Digital galvanometer scanner; scan speed up to 20 000 mm/s: 30% faster than HS403P at 15 200 mm/s; feature resolution down to 0.3 mm.

Platform: Vertical Z-axis build cylinder 400 × 400 × 450 mm (standard) or 400 × 400 × 540 mm (optional extended); minimum layer 60 µm.

Chamber: 8-zone high-temperature thermal system; maximum 220 °C: required for PA6, PA66, and PEEK; N₂ purge system targeting O₂ < 1% for PEEK processing; machine weight ~3 000 kg.

Calibration

Fiber laser verification: Spot diameter and surface power; inspect optical path window every 200 build-hours.

HT thermal stabilisation: Ramp to 220 °C: never step; all 8 zones within ±2 °C.

N₂ for PEEK: O₂ ≤ 0.5%; continuous monitoring; inspect door gaskets regularly.

Extended Z-axis (540 mm): Deflection < 0.3 mm at full depth; mount on antivibration pads.

HT test coupons: ASTM D638 + annealing for PEEK; mechanical properties within Farsoon HT material datasheet spec.

Common defects

PEEK oxidation: O₂ > 1% at 220 °C → improve N₂ purge + check gaskets + continuous O₂ monitoring.

Delamination / layer cracking: Rapid post-build cooling for PEEK/PA66 → controlled cooling ≥ 12 h; do not open chamber above 60 °C.

Orange-peel on PA6: Incorrect PBT → tighten tolerance to PA6 MBT window.

Bulk powder caking: Excess ambient temperature → optimise packing ratio; verify edge-zone temperatures.

What it is used for

PEEK aerospace components: 220 °C + N₂ + fiber laser = conditions for PEEK without oxidation and with good mechanical properties.

PA6 / PA66 functional prototypes: One of the few accessible industrial HT-SLS systems with sufficient chamber temperature for PA6 without degradation.

Medical HT devices (non-implantable): Sterilizable PEEK housings and surgical instruments.