EIBOS Easdry Review

The EIBOS Series X: Easdry makes sense if you want to dry one spool at a time, prefer a physical heat knob, and use filament that dries comfortably below its advertised 65°C ceiling. Its biggest compromise is temperature control: the material labels on the dial don’t tell you the actual temperature around your spool.

I’d consider it for occasional PLA or suitable PETG drying, with the option to feed your printer straight from the box. I’d choose something else for hotter drying schedules or frequent spool changes. The Sunlu S2 is the closest alternative if you’d rather have a temperature display and countdown.

How well does the Easdry dry your filament?

The Easdry uses a heater and fan to move warm air through the box. That can help when moisture is behind rough prints or unwanted strings of plastic between parts. But stringing alone doesn’t prove your filament is wet. Check the recommended printing profile, nozzle cleanliness and retraction—the setting that pulls filament back between printing moves—before blaming moisture.

EIBOS specifies a 40–65°C range, based on a room temperature of 25°C. Treat that as the stated operating range, not a promise that every part of a loaded spool reaches the dial’s intended temperature.

A published 2021 test gives some encouraging evidence of moisture removal. With 2 ml of water added to a small sponge, the Easdry removed 45.2% after 30 minutes and 91.1% after an hour. The recorded room conditions were 22°C and 51% relative humidity. The accompanying results table lists a maximum temperature of 57°C.

Those results show water leaving a sponge, not a full roll of filament drying in an hour. They also don’t establish the temperature throughout a spool: the summary doesn’t identify the temperature probe’s exact location. You shouldn’t turn that 57°C result into a universal temperature limit, either.

For a useful drying schedule, start with the instructions for your exact filament. These examples show why the material name on the knob isn’t enough:

These are filament-maker instructions, not measured Easdry completion times. Different PETG and flexible TPU formulations can need different treatment. The Easdry’s broad nylon and polycarbonate compatibility claims don’t override a particular grade’s hotter requirements. Running a cooler cycle for longer isn’t an established substitute.

Check the spool’s heat tolerance, too. A drying temperature suitable for the plastic filament may still damage its reel. Finish the prescribed cycle and judge a small print with the same settings; a falling humidity number alone isn’t proof that drying is complete.

Check your spool before buying the Easdry

Measure the reel itself, including its widest edges. “One-kilogram spool” describes how much filament it carries, not its shape. A small sample reel can fail to fit just as easily as a large one.

EIBOS’s specification gives these limits for the standard box:

• Outside diameter below 220 mm.
• Width below 72 mm.
• Center opening greater than 50 mm.

That last measurement is the hole that goes over the central spindle. It isn’t the diameter of the filament. Follow the manufacturer’s strict less-than and greater-than limits; don’t assume a reel exactly on the boundary has room to turn.

Canadian Amazon owners described both problems in 2024: one couldn’t mount small 250 g reels because their center holes were too small, while another found some wider 1 kg reels wouldn’t fit. These are useful examples of why you should measure, rather than evidence that all small or full-size reels are incompatible.

Once loaded, the spool needs to turn without rubbing against the cover or binding on its support. The printer pulls filament from it; the Easdry doesn’t provide powered spool rotation. EIBOS offers printable width and inner-diameter accessories, but don’t assume those make any oversized reel suitable without checking the accessory instructions.

For filament thickness, 1.75 mm appears consistently in the official specifications. EIBOS also advertises 2.85 and 3.00 mm compatibility, while its technical table lists only 1.75 mm. If you use thicker filament, get confirmation for the supplied outlet and tube before buying.

Using the Easdry during and after a print

The Easdry’s appeal is how little there is to operate: a power switch, a heat knob with material markings, and a separate humidity display. You don’t get a digital temperature readout or a programmable drying countdown. Plan when you’ll stop the cycle instead of expecting a timed program to finish it for you.

EIBOS provides three filament outlets so you can choose a route that suits the printer’s position. Load the reel, route its loose end through an outlet, and check that it unwinds freely before starting a long print. Avoid a route that pulls sharply sideways or adds tight bends. Flexible filament particularly benefits from an easy path into the printer’s feeding mechanism.

Being able to print from the dryer doesn’t mean every printer arrangement feeds equally well. In a May 2024 Reddit discussion, one owner liked Easdry for printing directly from the box; another complained about its spindle arrangement and limited routing room. Neither account establishes a universal result for your setup.

Leave room beside the box to remove its cover, too. An April 2025 UK forum owner highlighted that access requirement despite the Easdry’s small size.

Expect fan sound while drying. One Canadian owner found it quieter than their printer, but that doesn’t tell you how noticeable it’ll be at a quiet desk.

The humidity display measures the air, not water inside the filament. Heating changes relative humidity, and the sensor’s stated range bottoms out at 10%. That reading isn’t a “fully dry” signal.

The two desiccant slots hold moisture-absorbing material to help keep the air dry afterward. For longer storage, I’d move the spool to a sealed container with dry desiccant. How long a spool stays dry in the switched-off Easdry is still unclear.

Easdry complaints and support

Owner reports are mixed, with useful drying results alongside complaints about fit, heat adjustment and the humidity meter. A January 2024 Canadian Amazon reviewer reported a dead meter battery that the seller resolved. The meter uses an LR44/AG13 button cell, so a blank display doesn’t necessarily mean the heater has failed.

A June 2024 Canadian reviewer described buying three units, with one arriving unable to heat, and questioned the sensor. Separately, a September 2024 Reddit owner reported little temperature change across knob settings; other participants said their dryers worked well. These accounts justify checking a new unit promptly. They don’t establish today’s US failure rate or identify the most reliable dryer.

Support terms deserve attention before you order. EIBOS’s sales FAQ promises 30 days of technical support but describes its one-year warranty as a “paid warranty,” without clearly explaining the charges. Its direct-store return policy also gives conflicting deadlines. Ask the seller to confirm coverage, return costs and the applicable deadline in writing.

If the unit doesn’t heat or behaves unexpectedly, contact the seller or EIBOS support with the order details and a description of the problem. Owner-described internal adjustments aren’t a sensible requirement for a new purchase.

Is the Easdry worth buying for your setup?

I’d buy the Easdry if you usually work through one spool at a time and its drying schedule and measurements both fit. EIBOS still lists a US 120 V, 60 Hz version; choose that version for a US outlet. Its compact size and physical controls are useful if you don’t want another menu-driven device beside the printer.

The current Sunlu S2 is the more useful alternative when you want displayed temperature and a countdown. Sunlu now specifies a circulation fan and a maximum setting of 70°C. Older comparisons involving a fanless S2 don’t settle how today’s version compares with the Easdry. Choose it for those controls, rather than assuming the higher setting proves faster or more even drying.

The EIBOS Polyphemus is worth considering when one spool at a time holds you up. It costs more, accommodates two reels within its specified limits, and adds powered rotation and timed operation. Check the version: EIBOS offers both 70°C and 80°C variants. Even the hotter one remains below the 85–90°C instructions for the PC Blend and nylon examples above. Bigger capacity also doesn’t mean every wider or taller reel fits.

If your filament already prints well and you mainly want to protect it between projects, start with sealed storage and desiccant. You don’t need to run a heater simply because you own one.

For a first dryer, the Easdry remains a reasonable choice for suitable spools and lower-temperature materials. Its strongest case is straightforward drying with a physical knob. If you want to see the temperature, schedule automatic stops, or prepare several rolls regularly, those are good reasons to choose a different dryer.