Skip to the “pick what’s important to me” filter tool below.
About this guide #
This focuses on products that are built and marketed as filament dryers. You can of course get a food dehydrator or a blast furnace! But most people are looking for a dedicated filament dryer. It also focuses on 1kg spools, since that’s the most common spool size.
I have experience with some of these products, and some of the recommendations are based on their reputation in 3d printing discords, including the Bambu official discord.
Notable Recommendations #
The value GOAT: Creality Space Pi X4 #
The Creality Space Pi X4 ↗ is the current GOAT for filament drying. If you have the space and budget for it, get it. 2 independently controlled chambers that fit 2 1kg spools (or 1x2kg!) each, up to 85C max temp. Hot enough to mostly regenerate Silica beads. Vents moisture while drying, and has “keep dry” ability. This is the “buy once, cry once” dryer if you don’t need extreme temps or annealing.
Bambu AMSes #
If you use a Bambu printer, the AMS 2 Pro is the most convenient solution for drying PLA and PETG.
The AMS HT is nice for Nylons, Polycarbonate, and other high-temp materials (check compatibility!), but I do not recommend it for TPU even with the passthrough port; the rollers have too much rolling resistance and can cause under-extrusion. There’s anecdata that some AMS HT’s don’t reach the configured temps.
The best option < $100: Polydryer #
If you want a single-spool dryer, get this one.
The Polymaker Polydryer ↗ is unique in that its dryer and storage box can be separated, letting you use one dryer with however many storage boxes you want.
It can be modded to dry 2 spools at once (with an extra box), or to recharge silica beads effectively.
Polydryer boxes are also the best choice to print TPU from; this bearinged thru-spool hanger reduces rolling resistance significantly. See the TPU Tamer Guide for more details on hassle-free TPU printing.
Extreme High Temps & Annealing: Sunlu E2 #
If you need a unit that can dry filament or anneal prints >100C, the Sunlu E2 ↗ is basically your only choice for ‘purpose-built’ products. AFAIK, it’s the highest temp commercially available filament dryer.
Note that if printing from >1kg spools on the E2, you might run into issues because it doesn’t have centered PTFE ports for your filament to exit. This can lead to filament rubbing on the spool or other issues.
Other good options #
Multi-spool #
- Sunlu S4 ↗ : 70C, fits 4 spools.
- Creality Space Pi Plus ↗ : 70C, fits 2 spools.
- Sovol SH02 ↗ : 70C, fits 2 spools.
Single-spool #
- Creality Space Pi ↗ : 70C. But seriously, get the Polydryer. Only get this if you have a narrow space for a dryer.
Choose Your Filament Dryer #
Use the filters below to find the perfect filament dryer for your needs. All prices are approximate.