Filament Dryer for Nylon Review — Creality Space Pi X4 85°C

Filament Dryer for Nylon Review — Creality Space Pi X4 85°C

A four-spool, dual-chamber dryer with two 200-watt PTC heaters and an 85°C ceiling — the only unit of the five that can reach the temperature engineering filaments actually ask for, at $158.99. We score this filament dryer for nylon 8.8 out of 10.

This review is research-based. We did not physically test these products; specifications, ratings and prices are taken from the live listings on the date shown. This filament dryer for nylon is one of five compared in our best filament dryer guide.

Filament dryer for nylon — Key Specifications

Eighty-Five Degrees Is What Makes This a Filament Dryer for Nylon

Every other unit in this comparison stops somewhere between 50°C and 55°C. This one reaches 85°C, and
that single number is the reason it tops the group. Nylon, polycarbonate and the PAHT blends are the filaments that
genuinely cannot be printed wet — they bubble, hiss and come out weak — and they are also the filaments that need the
most heat to give up the water they have absorbed. A dryer that tops out at 50°C is not drying nylon. It is warming it.

Creality is unusually direct about this in its own copy, naming PA, PAHT and PC as the materials the dual 200-watt
PTC heaters exist for. Four hundred watts of heating across two insulated chambers is a different class of appliance
from a 24-watt box with a resistor and a fan, and the listing does not pretend otherwise.

Two Chambers, Two Temperatures, One Appliance

The dual-chamber design is the feature that justifies the price rather than the temperature alone. Each chamber
has its own PTC heater and its own setpoint, so a spool of PLA can sit at a safe 45°C on one side while nylon runs at
80°C on the other. Anybody who prints in more than one material has until now had to choose between two cycles or one
compromise temperature, and a compromise temperature is the thing most likely to ruin the PLA.

Eight filament outlets with PTFE tubing mean all four spools can feed printers while they dry. Creality claims four
printers can run off it at once, which is an unusual thing to need at home but exactly what a small print farm looks
like. Selecting single-chamber mode is said to save up to 40 percent of the energy, which is a sensible way of
admitting that running both chambers is expensive.

The Energy Claim and the Spool Warning

The first bullet in the listing is not a feature. It is a warning: make sure other brands’ plastic trays are
heat resistant, and preferably use Creality’s own RFID filament with plastic trays. Read plainly, that is a
manufacturer saying its appliance gets hot enough to deform the spool the filament arrived on — which is true, and
which none of the cooler units has to mention. It is the most honest sentence in the group and it is also a
commercial steer toward Creality’s own consumables.

It matters more than it first appears. Cardboard spools are increasingly common and generally fine; the cheap
injection-moulded PLA spools some brands still use are not, because PLA begins to soften in the mid-50s. An 85°C
appliance will reshape them. The warning is doing real work.

Filament dryer for nylon — Limitations

The published specification is careless on an appliance at this price. Item Weight reads
1 kg and Item Diameter reads 1 inch for a dual-chamber four-spool box with 400 watts of heaters in
it; Material Type reads “Filament Dryer 4 Spool” and Number of Items and
Number of Packs both read 4. These are placeholders, not measurements, on the most expensive product
in the comparison.

No warranty term appears anywhere in the listing. Two of the cheaper units state one year plainly. For a
400-watt heated appliance that is a real omission, and it is the main reason this does not score higher.

The 85°C ceiling needs respecting rather than using. Published data sheets put PLA’s glass transition at 55–60°C
and its heat distortion temperature at 75–85°C, so 85°C is not a setting to leave a PLA spool at — it is the top of
the range for engineering filament only. The listing names PLA among its compatible materials without saying this.

Like every other unit here, it displays humidity but never states what humidity is good enough. There is no dew
point, no target residual-moisture figure and no achievable relative-humidity floor anywhere in the listing.

Setting Up This Filament dryer for nylon

Decide the two temperatures before the first run, because the whole point of the machine is that they differ.
A practical pairing is 45–50°C for PLA and PETG in one chamber and 70–80°C for nylon, PC or PAHT in the other.
Resist the temptation to put everything at 85°C for speed.

Check the spools before they go in. Cardboard and heat-stable plastic are fine; soft injection-moulded plastic is
the one to be careful with, which is precisely what the listing’s own first bullet is about. Feed the PTFE tubes
before closing up, and route them so the filament leaves without rubbing on the housing.

Give the first cycle longer than feels necessary. ISO 291, the international standard for conditioning plastics
before testing, notes that the time a plastic needs to reach humidity equilibrium is in general much longer than the
time it needs to reach temperature equilibrium. The display reaching temperature is not the job finishing.

Who Should Buy This Filament dryer for nylon?

Anyone printing nylon, polycarbonate or PAHT, and anyone running more than one machine. If engineering
filament is in the rotation, the rest of this comparison is not really competing — the temperature ceiling decides
it, and 50°C does not dry nylon.

It is harder to justify for a single printer running PLA and PETG. Four hundred watts, four spool bays and two
setpoints are capability a one-material hobbyist will not use, and the SUNLU at a fifth of the price reaches a
temperature that suits both those filaments.

The Verdict

This wins on the specification that actually governs the result. A filament dryer for nylon has to exceed
roughly 70°C to be doing anything useful, and of the five units here only this one does — with two independent
chambers so that reaching 80°C for nylon does not mean cooking the PLA next to it. The dual 200-watt PTC arrangement
and the eight PTFE outlets are a genuine print-farm design rather than a scaled-up dry box.

It loses marks for a specification table full of placeholders and for stating no warranty term at all on a
400-watt heated appliance, which is why it scores 8.8 rather than higher. At $158.99 it is five times the price of
the cheapest unit here, and that is only worth paying if engineering filament is in the rotation. If it is, nothing
else in this group is an alternative.

Filament dryer for nylon — Frequently Asked Questions

Can this filament dryer for nylon really reach 85°C?

The listing specifies dual 200-watt PTC heaters with insulated chambers reaching up to 85°C, and names PA, PAHT and PC as the intended materials. It is the only unit of the five compared here that publishes a ceiling above 55°C.

Is 85°C safe for PLA?

No. Manufacturer data sheets put PLA’s glass transition at 55–60°C and its heat distortion temperature at 75–85°C, so PLA should be dried far below this unit’s maximum. Use the second chamber at 45–50°C for PLA and keep the high setting for nylon and polycarbonate.

Can you print from it while it dries?

Yes. The listing describes eight filament holes with PTFE tubing and says four spools can dry and print at once, which Creality presents as supplying four printers simultaneously.

Will my existing spools survive the heat?

The listing’s own first bullet asks you to make sure other brands’ plastic trays are heat resistant and recommends Creality’s own filament with plastic trays. Cardboard spools and heat-stable plastics are generally fine; soft moulded plastic spools are the ones to watch at these temperatures.

Where to Buy

Check Price on Amazon

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Full comparison: Best filament dryer guide.