Modular Thermos, Bottle & Cap Drying Stand

Thermos Modular Drying Station

Tired of bad odors in your thermos after washing it? I designed this modular drying station because I was frustrated seeing how, day after day, my partner’s thermos never dried properly after work. Placing them upside down directly on the countertop was unstable—they would often tip over or get dented. Furthermore, without proper airflow, moisture trapped inside led to unpleasant smells.

This stand is the ultimate solution: it allows air to circulate through the mouth of the thermos and provides a dedicated spot for the cap, preventing it from sliding around the counter.

Main Features:

• Hybrid Design: I love mixing 3D printing technology with natural, accessible materials like wood. This combination brings warmth and simplicity to an everyday object.

• Customizable Stem: The design uses a standard 12mm diameter wooden dowel, a very affordable material easy to find in any craft or hardware store. Since it’s wood, you can cut it to the exact height your thermos needs.

• 100% 3D Printed Solution: If you don't have access to a wooden dowel or prefer not to use one, no problem! I’ve included an STL file for a 12mm cylinder. Just scale it on the Z-axis (height) in your slicer to fit your needs.

• Cap Space: The base features a specific 3mm deep cavity so the cap can dry right next to the thermos. You can place the cap face up or face down, keeping everything organized.

Give your thermoses and bottles a better life by keeping them dry, safe from falls, and well-maintained!

Print Settings:

• Material: PETG is recommended. While PLA works, PETG is better suited for kitchen environments due to its moisture and temperature resistance.

• Layer Height: 0.2 mm (provides a good balance between aesthetics and print time).

• Infill: 15% (enough to make the base sturdy without wasting material).

• Walls (Perimeters): 3 walls (ensures a solid structure to support the weight of the thermos).

• Top/Bottom Layers: 3 layers (for a smooth and durable surface finish).

• Supports: Not needed for the base design.

• Robustness: If you want extra strength, increase the wall count or infill. Increasing top/bottom layers won't have a huge impact, as the primary stress is compression.

Additional Tips:

• For the 3D printed cylinder: If you choose to print the stem instead of using wood and plan to make it quite tall, I recommend adding a Brim or Raft. This will improve bed adhesion and prevent the part from wobbling or detaching during the print due to its height and narrow base.

• Files: I’ve attached a ZIP file containing both files in FreeCAD format for anyone who likes to tinker and modify things to their liking.

• Note: One of the attached images is a "cozy" mockup to show how nice it looks—it's from my kitchen of the future! :_D
  
  
  ***MODEL UPDATED*** --->>> 14/05/2026
  
  After several months of testing, I began to notice that over time, the section of the rod that fits into the base starts to deform. This is likely due to the buckling stress it endures, and since it’s softer than the PLA used, that slight clearance eventually leads to a wobbly fit. Because of this, I’ve updated the design to prevent this issue, and after testing it for several weeks, it works perfectly.
  

  I highly recommend downloading the modified version as it is simply better—sometimes things need real-world testing to be refined, and this is the result of that improvement.

  For those who have already downloaded and printed the initial version, I’ve included a small "fix" model to improve the fit of the original part.
  

  Best regards, and I hope you find it useful! In my case, it’s working fantastically, and whenever people come over, they always ask where I bought it.