Abstract


OSAT stands for Open Source Appropriate Technology and this tool is a clever solution to a age old human need for fire. Using your bare hands to spin a stick back and forth with enough force to create the friction needed for fire causes blisters and other wounds to form on the hands. Especially if the first attempt is unsuccessful. With this tool and a skilled user, many fires could be started much quicker and the user would have no blisters. The scad file can be customized for most sticks and rope can be hand woven from plant fiber. Picture of completed print coming soon. For now, on the right are screenshots of the 3D models and a Primitive Technology video where I got the idea from.


Momentum Fire Starter

Project developed by Cascheel. Here is a Link to a Primitive Technology YouTube video that shows the original design working and some other uses for the tool. The basic consept is that the fly wheel gets compression fitted on the straight-ish stick and the rope is attached to both ends of the pump with the middle of the rope also attached to the end of the stick. the pump gets pushed down and the momentum of the spinning stick re-wraps the rope around the stick for the next pump.

Template:Statusboxtop Template:Status-design Template:Status-prototype You can help Appropedia by contributing to the next step in this OSAT's status. Template:Boxbottom

FlyWheel Firestarter PrimitiveTechnology2.PNG
FlyWheel and Pump Handle.PNG

Bill of Materials

everything needed besides the 2 3D printed parts are essentially free. You will need:

  1. A straight-ish stick with a diameter between 10 and 20 mm
  2. About 2 feet of hand woven or manufactured rope depending on how long the stick is.
  3. Some dry kindling to catch the hot ash
  4. Another small peace of wood to drill onto

Here are the OpenSCAD files for the Momentum fire starter. They are easily cognizable.

File:ChaseFlyWheel.scad 
File:ChasePumpHandle.scad

I couldn't upload the .stl files because of the following error Unavoidable Error.PNG


If you want the stl file for a 10mm diameter stick you can just open the .scad files and click the export to stl button.

Cookies help us deliver our services. By using our services, you agree to our use of cookies.