Background

This project was built to improve the 3d printing filament storage at the Cal Poly Humboldt makerspace. The previous storage made the filament inefficient to find, and did not keep the filament sufficiently dry, leading to failed prints. This new storage was built by undergraduate engineering students, Orion Knowler, Nelson Botzler-Washington, Riley Baker and Oscar Hudson, to more effectively store Cal Poly Humboldt's filament.

Problem statement

The objective of this project was to create 3d printing filament storage for the Cal Poly Humboldt makerspace. The previous filament storage was unorganized, inefficient to find rolls, and did not keep the filament dry enough to prevent print failures.

Prototyping

Prototypes and testing

The prototype phase of the project revolved around trying to figure out how the dry storage would look. Three prototypes where built:

• The first prototype we built (Far left) was focused on deciding how the filament would be stored in the fridge. We decided that we could fit the most amount of filament if they rested standing on two racks.
• Prototype 2 (Middle) highlights how the racks will be placed in the fridge and where the dehumidifier will be. It also helped us decide that we really wanted a glass door so the user can clearly see the filament they want.
• The third prototype (far right) was made to see what the finished product might look like. This was made in Fusion 360.

• Sample gallery

  

  

  

Final product

The Final Product is a repurposed soda fridge with modified racks and a dehumidifier. There is enough room to hold 36-40 rolls of filament and the glass door in the front makes them easily identifiable. The image on the left is the complete product with the installed dehumidifier. The racks are not included in that image due to wanting to show the empty space the fridge has. The image on the right shows how the filament will be stored in the fridge. The racks make sure the filaments are stable and easy to grab.

Construction

Our first step in constructing this project was purchasing a used fridge. The fridge we chose was a used coca cola model with glass sliding doors for easily identifiable contents. We used the fridge as the body for our filament storage, because it sealed well and already fully insulated. We removed the fridges shelving and cleaned the entire fridge thoroughly. We re used the metal bars of the fridges original shelving, by removing the excess metal brackets with an angle grinder. We used a dremel to smooth the angle grinder cuts and remove anything sharp. Then, we added foam on the edge to soften it. We purchased a briidea de humidifier to install inside the fridge. We installed the de humidifier by running its wires through the bottom of the fridge and connecting it to the fridges power supply, where the cooling system as originally plugged in. This way, the fridge can be plugged into a regular 120-volt outlet with the original cord, but instead of running its cooling system, the dehumidifier runs. We mounted the dehumidifier controls onto the side of the wall and the actual dehumidifier into the bottom corner. Finally we reinstalled the shelving.

• Sample gallery
• 
  De humidifier system plugged in and running
• 
  Finished storage with filament inside

Video instructions

A good way to display a process is by making a video explaining your process. See Template:Video for information on how to add and annotate videos.

Finished filament storage

A description of our building and operational process for our filament storage.

Authors: Orion Knowler, Nelson Boeltzer-Washington, Riley Baker, Oscar Hudson

Date: 2025-05-09

Location: California

Language: English (en)

License: CC-BY-SA 4.0

Operation

This is how to operate. It should have a brief introduction. You might want to show images or videos with step-by-step instructions when needed.

Conclusion

Team

Introduce team and semester in the following format:

• Lonny Grafman

• Emilio Velis
• Oscar Hudson
• Orion Knowler
• Nelson Botzler-Washington

References