Polymaker PolyDryer Filament Dryer and Storage: A Complete Solution

The Polymaker PolyDryer is a filament dryer that uses a modular system to both dry and store filament while keeping the price at a reasonable $79.99. The PolyDryer is capable of drying most common filament types, including PLA, PETG, ABS/ASA, TPU, and even materials that struggle with moisture like PVA and PA.

I was impressed by the PolyDryer and would not hesitate to recommend it as a useful tool that can pay for itself quickly. The PolyDryer is an easy purchase to justify for print farms as well as hobbyists who just want to prepare their material immediately before printing. The modular PolyDryer Box system can be used to store material between uses, and the visual indicator of the hygrometer on the front of the unit gives an at-a-glance status update on the condition of the material.

Table Of Contents

• Specifications
• Included Accessories
• Drying Filament
• Test Print: Before – After
• Modifications on Printables
• Storing Filament
• Compare to Other Filament Dryers
• Conclusion and Pros & Cons

Price: $79.99
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Amazon

Official Website

Polymaker PolyDryer Specifications

Modular design
Compatible with 1kg spools
Supported materials: PLA/PVB/PETG/ABS/ASA/TPU/PA/PC/PVA and other
Dimension: 235(L) x 120(W) x 290(H) mm
Recommended working environment: 20℃ – 35℃

Included Accessories

The Polymaker PolyDryer includes the drying station, a PolyDryer Box, a combination hygrometer and desiccant storage box, and a pair of seals that can be attached to the Box, and a few spare parts. The included desiccant changes color as it absorbs moisture, which provides users a visual indicator of how much moisture is present during drying.

The PolyDryer doesn’t require much setup, but the desiccant container needs to be filled by hand before using the machine. This is a delicate process, as the desiccant beads are very small and will bounce all over a desk if you’re not careful (ask me how I know). Once the container is filled, there is a tab that needs to be removed on the battery compartment which will activate the hygrometer and provide a real-time reading.

Drying Filament with the PolyDryer

The PolyDryer unit has a printed guide on the top of the unit that shows a breakdown of filament types sorted by the Power Level required to dry them, as well as the recommended times for each.

The interface on the front of the unit is simple and easy to understand, with a Start/Stop button controlling the unit, two buttons for increasing/decreasing the value on the screen, and a selector to toggle between time and Power Level.

Using the suggested settings for PETG (Power Level 2, 6 hours of drying time), I dried a spool of GreenGate3D Mars Red PETG that had been open and unsealed since 2020. It only took a few clicks to adjust the power level and get the unit started. The integrated hygrometer measured 44% when the filament was first placed in the box, and by the end of the six hour cycle it was measuring 25%.

Using GreenGate3D Mars Red PETG, I printed a Benchy on the Bambu X1-Carbon before and after the complete six hour drying cycle using the same gcode file. The model printed before shows significantly more stringing and voids where moisture was present, as well as an overall inconsistent appearance on sidewalls. The model printed after shows an improvement in overall quality and significantly fewer bubbles and defects. Once the print was completed, the filament was stored in a sealed PolyDryer Box where it remains protected from absorbing excess moisture.

Printables Modifications for the PolyDryer

The PolyDryer is designed to process a single PolyDryer Box at a time, but the printable ‘Double Barrel Mod‘ from Printables user 3DPrintSOS allows users to attach two boxes to the dryer at the same time.

During my testing of the PolyDryer, this was the only feature I found myself wishing for and I was happy to see that someone else had released a design to solve this problem. This is just one of several printable accessories promoted on the Polymaker Printables page, which highlights the close community engagement Polymaker has with its users.

Storing Filament with the PolyDryer Box

The PolyDryer Box is designed to be used as a modular storage solution, and multiple boxes can be used to store material when not in active use. By placing the plugs underneath the PolyDryer Box, the material can be stored in a sealed state for future use.

I tested several brands of filament including Polymaker, Prusament, and GreenGate3D, all of which fit in the storage box. For materials that readily absorb moisture or require conditioning before printing, having the material sealed and ready to dry is a critical problem which can be solved by the PolyDryer Box.

Compare Polymaker PolyDryer to Other Filament Dryers

On 3DWithUs, we have a detailed filament dryer comparison guide where products from brands such as EIBOS, Creality, Eryone, Sovol, and others are listed for price and feature comparisons.

Other filament dryers like the EIBOS Polyphemus or the FIXDRY are designed to process two spools of filament simultaneously, but do not have the same easy-to-use integrated storage solution offered by the PolyDryer Box. Having used several of these units, I would recommend the PolyDryer to anyone interested in a filament drying solution that also offers filament storage.

Conclusion and Pros & Cons

Polymaker offers the PolyDryer (which includes the drying station and a single PolyDryer Box) for $79.99 and additional PolyDryer boxes at $29.99 apiece directly on the Polymaker site as well as on Amazon.

Amazon

Official Website