ETEC Xtreme 8K

The ETEC Xtreme 8K is a DLP 3D printer from Desktop Metal with a 450 x 371 x 399 mm build volume.

Specifications

ETEC Xtreme 8K: Technical Overview

Light Engine

Dual parallel 4K DLP projectors with UV light source cover the full 450×371 mm XY field. Native pixel ~75 µm; pixel-tuned intensity delivers Ra <1 µm surface finish.

Top-Down Vat Architecture

Unlike bottom-up DLP, the part grows submerged in the heated resin vat while the UV beam exposes the free surface from above. This drastically reduces separation forces and enables minimal support structures.

Build Volume

450 × 371 × 399 mm (~66.7 litres): one of the largest DLP build envelopes commercially available. Parts up to 450 mm long print in a single run.

Speed and Throughput.

Calibration

Calibration: ETEC Xtreme 8K

Platform Levelling

Verify flatness against the vat glass with feeler gauges at 4 corners; parallelism < 0.05 mm. Repeat after every material change.

Dual-Projector Stitching

Run the ETEC calibration pattern: the system auto-aligns the overlap zone of both projectors for a smooth image. Recheck after transport or mechanical servicing.

Resin Temperature

Allow 20–30 min warm-up to operating temperature (typically 25–35 °C).

Common defects

Common Defects: ETEC Xtreme 8K

Inter-layer Delamination

Cause: insufficient UV power or excessive print speed. Fix: reduce layer thickness, increase exposure time.

Part Detachment (Loss of Adhesion)

Cause: inadequate base layers in top-down architecture. Fix: increase base-layer count and over-cure; clean the platform surface.

Warping on Wide Flat Parts

Cause: photochemical shrinkage at large XY cross-sections. Fix: add ribs to thin sections; optimise post-cure UV profile.

What it is used for

Use Cases: ETEC Xtreme 8K

Automotive Prototypes and Functional Test Parts

The 450×371 mm platform produces bumpers, interior panels, and vent grilles in a single build without splitting.

Series Production for Defence and Aerospace

>150 L/day throughput at consistent quality makes the system competitive with injection moulding for short-to-medium runs.