Skip to content
EIBOS 3D Printer Filament Dryer

EIBOS 3D Printer Filament Dryer

By EIBOS · 3D Printing Accessories & Scanners · 3D Printing · More from EIBOS

  • 4 independent drying chambers, 4x60 W heaters, 240 W total
  • Temperature range 20-65 C
  • Humidity range RH 10-99%
  • Max spool size 205x68 mm
  • Filament 1.75 mm

Price not listed

New
Used, refurbished, open-box

Stores are listed in a fixed order, never by price or commission. Prices are snapshots. Check the current price with the store.

Problems, parts and running costs

Summary

A four-chamber, AMS-mounted filament dryer for Bambu Lab AMS 1 and AMS 2 Pro owners who keep mixed materials loaded, with per-chamber 60 W heaters, a 20–65 °C range and RH 10–99% humidity control. Check compatibility before buying: it only fits those two AMS models, the AMS 2 Pro needs a self-printed adapter, and the 65 °C ceiling will not suit jobs needing hotter drying.

Strengths

  • Four independent chambers let mixed materials in one AMS dry to different targets at the same time.
  • Print-while-drying keeps jobs running during a drying cycle.
  • Dual-stage drying with automatic humidity maintenance after the cycle ends.
  • Store reviewers report easy picture-based assembly, quiet operation and stable humidity control.
  • Improved PETG and ASA print results are reported by store reviewers.
  • GoodPrints3D identifies mixed-material AMS owners as the clearest fit.

Weaknesses

  • The 65 °C ceiling excludes jobs that need hotter drying.
  • Only fits AMS 1 and AMS 2 Pro; AMS Lite owners and users without a compatible AMS are out.
  • The AMS 2 Pro needs a self-printed adapter, and one owner reports poorly machined acrylic baffles, a broken baffle, missing mounting holes and initially unresponsive customer service that later replied on the forum asking for an order number by email.
  • Cross-chamber thermal crosstalk is documented by the manufacturer, not independently verified.
  • Temperature and humidity readings are sensor-location values, not filament or chamber averages.
  • No independent instrumented test of temperature accuracy, drying time or noise was found.

Verified specifications

ModelEIBOS Series X: TETRAS, four independent chambers.
CompatibilityBambu Lab AMS 1 and AMS 2 Pro only; AMS 2 Pro requires a self-printed adapter; AMS Lite is not supported.
ElectricalUS AC 120 V, 60 Hz; EU/UK/AU AC 230 V, 50 Hz; not wide-voltage.
Heating60 W per chamber, 240 W for the whole unit.
Temperature range20–65 °C, based on 25 °C ambient.
Humidity rangeRH 10–99%.
Filament1.75 mm.
Maximum spool size205 × 68 mm.
Drying time30 minutes to 24 hours; unlimited time in second-stage drying.
Power levelsLow, Medium, High.
Preset profilesPLA 50 °C, PETG 55 °C, ABS 60 °C, TPU 60 °C, M1 60 °C, M2 65 °C; timers 4 h, 2 h, 2 h, 4 h, 6 h, 8 h.
Dual-stage dryingsupported.
Print while dryingsupported in single-stage, second-stage and humidity mode.
Humidity maintenanceautomatic switch to humidity mode after drying to hold the preset RH.
Cross-chamber behaviour (manufacturer test): cavity A at 65 °C for 5 h left adjacent unpowered cavity B at 42 °C; with cavity B powered at 55 °C it measured 56 °C.
Screen viewing angle60–130 degrees, adjustable per screen.
Lid opening80 degrees (manual), 80–85 degrees (FAQ).
Error indicationsfan alarm on the screen; “LL” temperature display on sensor interface fault.
Temperature calibrationavailable by holding the OPTION button.
Package size430 × 360 × 250 mm.
Upper cover module size360 × 290 × 135 mm.
Height with AMS280 mm.
Height with cover open440 mm (manufacturer page and shop listing), 424 mm (manual).
Weight4.0 kg net, 5.0 kg total.
Materialsacrylic baffles and covers, silicone sealing strip, plastic brackets and frames.
Included itemsPower Module ×1, Screen Module ×1, Upper Cover Module ×1, Floor Pads ×8, Acrylic Front Baffle ×4, Acrylic Middle Baffle ×3, Acrylic Rear Baffle ×3, Acrylic Fixing A ×2, Fixing B ×4, Fixing C ×2, Feed Baffle ×4, Support Frame ×4, Square Silicone Strip ×1, Power Cord ×1, Type-C Cable ×4, Screws M3H8 x14, Screws M3H12 x14, Allen Screwdriver ×1.
Upper cover module has no handle; the manufacturer suggests printing one.
Full research notes and sources

Compatibility and installation

Tetras is an AMS upgrade, not a universal dryer. Installation replaces the AMS top cover and foot pads and takes about 10–20 minutes. The AMS 2 Pro needs a self-printed adapter, and Type-C cables must be matched to the Screen, Power and Control ports or the unit will not start or will form unintended control groups. The manufacturer notes that third-party accessories such as a BIQU Panda Pad may obstruct one or two screens. The unit is not wide-voltage: separate 110 V and 220 V input versions exist, so the regional variant must match the mains supply.

Drying performance and controls

Each chamber has its own 60 W heater, with Low, Medium and High power levels and preset profiles for PLA, ABS, PETG, TPU plus custom M1 and M2 slots. The 65 °C ceiling is deliberate: the manufacturer cites the Bambu Lab spool label requirement that drying temperature stay below 70 °C. Drying runs from 30 minutes to 24 hours, with unlimited time in the second stage, and the unit switches to humidity mode afterwards to hold the preset RH. Cross-chamber behaviour is manufacturer-tested only. The screens have a 60–130 degree viewing angle, independently adjustable per screen, and the lid opens 80 degrees (80–85 in the FAQ). Fan and sensor faults show on screen, and temperature calibration is available by holding the OPTION button.

Owner reports and build quality

A detailed 3DWithUs assembly report describes rough, poorly machined acrylic baffles, parts about 1 mm too wide, a sharp slot that broke a baffle, and missing AMS 2 Pro mounting holes. A Japanese owner write-up reports missing or unexpected parts. Generic Eibos dryer cautions apply here too: cardboard spools add dust and fit problems, drying does not replace sealed storage, and bench space matters. Repairability is partly supported by iFixit guides and the manufacturer’s manual and adapter print files, but spare acrylic parts from EIBOS are not documented. Warranty terms and length were not found; only a support email is provided.

Running costs

Electricity is the main recurring cost: up to 240 W when all four chambers run, with no consumables, capsule lock-in or desiccant required. EIBOS’s own store lists the Tetras at $199.99, down from a $219.99 regular price, with the two-chamber Dyas at $129.99 (EIBOS store, 2026). Shipping is calculated at checkout, and regional warehouse variants are listed at the same price.

Is it worth it?

At about $200 direct, Tetras is a specialised AMS upgrade; value depends on whether mixed materials stay loaded in a compatible AMS. It suits original AMS owners with mixed loaded materials, and AMS 2 Pro owners willing to print and verify the adapter. It is a weaker buy for AMS Lite owners, users without a compatible AMS, mostly-PLA users with working sealed storage, spools larger than 205 × 68 mm, or jobs needing above 65 °C. For comparison, the SUNLU S4 is a standalone four-spool dryer with a 70 °C ceiling, and the EIBOS Polyphemus handles spools up to 3 kg with an 80 °C ceiling (current listings).

Which model this is

This page covers the EIBOS Filament Dryer Series X: TETRAS, the four-chamber model. Do not confuse it with the two-chamber Dyas (120 W, 3.0 kg net), the larger Polyphemus (up to 3 kg spools, 80 °C ceiling), the single-spool Series X: Easdry, or Cyclopes. Manufacturer support is support@eibos3d.com. ASIN B0GJ5KL5BH.

Sources

Manufacturer:

Independent reviews:

Owner reports:

Buying guides for this category

Related products