Eplus3D EP-A800

The Eplus3D EP-A800 is an SLA 3D printer from Eplus3D with a 800 x 800 x 450 mm build volume.

Specifications

Eplus3D EP-A800: Technical Profile

Laser and Optics

Dual 355 nm UV lasers with patented VarioBeam dynamic optics: switches between fine-detail (small spot) and high-throughput bulk-fill (large spot) modes within a single layer pass. Two independent galvanometric scanners divide the 800×800 mm platform into parallel cure zones. Self-calibrating sealed laser modules require no planned maintenance downtime.

Platform and Mechanics

Marble granite base: machine class > 1,000 kg at 800 mm platform. Precision ball-screw Z-axis; maximum part weight 120 kg.

Build Volume and Throughput

Volume: 800×800×450 mm: 85% larger than EP-A650.

Calibration

Calibration: EP-A800

1. Stitching Test: Dual Laser Alignment

Mandatory before each major job: print the stitching-test plate and inspect the boundary zone under magnification. Target deviation < 0.1 mm.

2. VarioBeam Verification

Check fine ribs and solid sections on the control part. Asymmetry between the two lasers is an early indicator of a problem.

3. Z-Levelling

After any relocation or with parts > 80 kg: repeat levelling.

Common defects

Common Defects, EP-A800

Stitching Artifact (Laser Zone Seam)

Visible horizontal line at mid-platform, misaligned galvo scanners. Fix: stitching calibration in EP-Build; if recurring, request service.

Suction Cupping

Part detachment at large flat undersurfaces. Fix: drainage holes, 10–15° tilt, reduced lift speed.

VarioBeam Over-Exposure

Wall thickening in bulk-fill zones with reactive resins. Reduce laser power or increase scan speed for that resin profile.

What it is used for

Use Cases, EP-A800

Automotive, Full Interior Panels

Single-print production of doors, dashboards, and bumpers without assembly joins.

Aerospace: Investment Casting Models and Wind-Tunnel Models

±0.1 mm accuracy and Ra < 0.1 µm meet strict aerospace requirements.

High-Throughput Small-Part Batches.