ETEC D4K

The ETEC D4K is a DLP 3D printer from Desktop Metal with a 90 x 50 x 150 mm build volume.

Specifications

ETEC D4K: Technical Overview

Light Engine

Industrial Texas Instruments DLP chip paired with a high-powered 385 nm LED. Native pixel 25 µm: claimed to be the highest resolution of any desktop 4K DLP printer on the market.

Build Volume

90 × 50 × 150 mm: minimal, fully optimised for small precision parts. The 150 mm Z-travel enables stacked batch production of small components.

Material Changeover

Quick-release vat enables material changeover in under 2 minutes: essential for multi-material lab workflows.

Materials

Open material system compatible with most ETEC open materials: engineering, dental, jewellery, and audiological resins.

Calibration

Calibration: ETEC D4K

Z-Zero and Platform Levelling

At 25 µm resolution, parallelism must be < 0.03 mm: verify after every vat change.

Irradiance Calibration

Set LED power per the ETEC Material Profile for the specific resin; cure depth within ±5% of target.

Material Changeover

Quick-release vat in < 2 min; check for cross-contamination when switching between incompatible resins.

Verification with Test Geometry.

Common defects

Common Defects: ETEC D4K

Fine Detail Sticking to Vat

Cause: excessive base layer exposure or fouled FEP. Fix: reduce base exposure; clean FEP; add minimal supports to fine details.

Undercure

Cause: insufficient UV power or outdated material profile. Fix: reload material profile; diagnose LED output.

Warping of Castable Parts

Cause: uneven post-cure. Fix: follow the resin manufacturer's post-cure protocol precisely.

Pixelation on Smooth Curves.

What it is used for

Use Cases, ETEC D4K

Jewellery, Wax and Castable Models

25 µm detail and ETEC castable resins with <0.1% ash content for precision investment casting.

Dental: Crowns, Bridges, Copings

±25–50 µm accuracy meets dental tolerances for individual prosthetic restorations.

Hearing Aid Shells.