AconityTWO

The AconityTWO is a DMLS 3D printer from Aconity3D with a 400 x 400 x 400 mm build volume.

Specifications

Laser System: Up to four independent fiber lasers with full-field overlap across the entire build area; power and laser count are configurable on order. Optics / Scanner: Galvanometric scanners with variable spot size from 80 to 500 µm, adjustable on-the-fly during a build: a unique feature in this build-size class. Build Volume: Cylindrical Ø400 × 400 mm; the ~50-litre envelope allows simultaneous production of multiple medium-sized components. Platform / Recoater: Modular system with optional preheating up to 500°C; redesigned easy-access cover for rapid substrate plate changes between campaigns.

Calibration

Laser verification: Spot size (80–500 µm) checked with burn media or power meter for each laser; in 4-laser configuration, overlap zones require separate coupon tests. Substrate levelling: Dial indicator across Ø400 mm; allowable deviation < 0.02 mm: the cylindrical geometry requires checking at the periphery as well. Gas purge: Wait for < 50 ppm O₂ (< 20 ppm for Ti/Al); quarterly O₂ sensor calibration is mandatory.

Common defects

Porosity (gas / LOF): Insufficient energy density or O₂ > 50 ppm; with multi-laser: unvalidated overlap regions → raise VED, check gas, test overlap coupons. Recoater streak: Contaminated blade or spatter: replace blade, reduce scan speed in spatter-prone zones, enable spatter filter in Aconity Studio. Hot cracking: High thermal gradient in CoCr/Ni alloys without preheating → activate preheating module (up to 500°C), reduce island size.

What it is used for

Aerospace components: Ti-6Al-4V and IN718 brackets, shafts, and combustion chamber inserts: 4-laser overlap delivers production throughput. Medical implants: Patient-specific Ti/CoCr prosthetics with novel alloys and no material lock-in. Conformal cooling tooling: 80 µm spot + large envelope = complex cooling channels in production dies.