PolyDryer Extra Desiccant Container

Inspired by the great idea of @skuidball about having a second container in the Polymaker PolyDryer box, I've decided to make my own design of an extra desiccant container. It fits the back side of the box and matches the ergonomics and style of the original PolyDryer box. 

UPDATE: published v2 with thicker reinforced latches for extra durability. Also added 1.5mm-holes version for smaller beads desiccant.

Design Considerations

1. Easy and reliable printing. No supports needed, easy first layer print.
2. Sliding lid mechanism that doesn't require supports.
3. Latch mechanism that prevents accidental opening of the lid when installing or extracting the container.
4. Handle in the lid for easy opening.
5. Vents in “strategic” sides of the container, taking in hot air from the dryer in the bottom and letting it out on the top.
6. No interference with the spool.
7. Easy extraction using a natural shape of the container with no need for a special handle and no need for pushing it from the bottom.

Desiccant

• For the polydryer_desiccant_container_and_lid_v2_holes_2mm.3mf model, use any desiccant with a bead size more than 2mm (the width of the holes in the model is exactly 2mm). I recommend using the “Dry & Dry Orange Premium Desiccant” (link to Amazon), the bead size is 3-5mm.
• For the polydryer_desiccant_container_and_lid_v2_holes_1.5mm.3mf model, use any desiccant with a bead size more than 1.5mm correspondingly.

Printing

Use the polydryer_desiccant_container_and_lid_v2_holes_2mm.3mf OR polydryer_desiccant_container_and_lid_v2_holes_1.5mm.3mf file (depending on your desiccant) that contains both the container body and the lid. It is exported from PrusaSlicer and already has both models placed on a plate with some minor slicing adjustments. Alternatively, you can print each part separately (see the corresponding .stl files).

Sidenote:
If you use the PrusaSlicer, there is a bug in the v2.8.0, where the top layer of the lid has a weird symmetrical pattern if your layer height is 0.2mm. This doesn't happen if you set a layer height to 0.201mm. You can also opt in to ironing for having a uniform top surface of the lid.

Filament Recommendations

Given that the container will be occasionally exposed to the heat coming from the dryer base, PETG is recommended. The model is designed and tested with this in mind. Using PLA may result in less optimal model performance, longevity and mechanically-wise.

If you want the colour to match the original Polymaker design, print it with the Polymaker Polylite PETG (Teal) filament (see the pictures).

Filament Settings (optional)

It should print fine with the default settings, but I'll share my preferences for the Polymaker Polylite PETG (Teal) filament after multiple prints on Prusa MK3S+:

• Nozzle 230C (all layers)
• Bed 80C (all layers)
• Retraction length 3mm
• Fan ON. Disable fan for the 1st layer, max PETG fan speed at 3rd layer. (You should see the message “Fan speed will be ramped from zero at layer 1 to 30% at layer 3”)

Usage

1. Print.
2. Put desiccant beads into a container.
3. Close the lid.
4. Install it in the PolyDryer box.
5. When the desiccant beads turn green in the main container, dry desiccant from both containers.

Enjoy! With the second container I was able to easily achieve 10% humidity in all my boxes.