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Updated Forestry Densiometer (Smartphone Capable)

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MOST Delta filament as guide.JPG This page was part of an MTU course MSE4777 OA and MSE4777 OB/MSE5777/EE4777/EE5777: Open-source 3-D printing

Please leave comments using the discussion tab. The course runs in the Fall semester. It is not open edit.

Updated Forestry Densiometer (Smartphone Capable)[edit]

Project developed by User:rsimpson
This OSAT has been designed but not yet tested - use at own risk.
This OSAT has been prototyped.

You can help Appropedia by contributing to the next step in this OSAT's status.


  • This project is an improvement made to this project created by User:btswanso. Densiometers are simple tools used by foresters all over the world to roughly estimate the amount of foliage coverage in a certain area of trees. This knowledge of coverage allows logging companies to make ethical decisions as to when forests need to be cut versus when they need to be left alone, which addresses the OSAT principle of transforming life on land. It is supposed to act as a stable grid that is placed over a photo taken with a generic smartphone (though it is designed for a Google Pixel 2XL). With 50 squares, finding a percentage of tree coverage is as simple as counting the "green" squares and multiplying the number by 2. After talking to a forester, I found that they like to have lightweight gear (so I worked for plastic reduction) that is still sturdy. Both these considerations were taken into account in the design process.
  • This design is better than the previous design in several ways. The previous design required a complex tripod to support it, which this design does not. As stated earlier, foresters enjoy carrying less equipment when possible. The old design also required the user to strain their neck to look at the densiometer from below. This design allows for more ergonomic viewing and counting.
Rsimpson Densiometer.PNG
Rsimpson Final OSAT.jpg

Bill of Materials[edit]

Tools needed for fabrication of the OSAT[edit]

Skills and Knowledge Necessary to Make the OSAT[edit]

  • Ability to slice 3D models for specific 3D printers

Technical Specifications and Assembly Instructions[edit]

  • This is a single-piece print that requires ~2.25 hours to print and ~34 grams of plastic at the recommended slicing settings
  • Recommended slicing settings include:
    • Material Type: PLA
    • Infill Density: 20%
    • Infill Type: Grid
    • Printing Temperature: 200 C
    • Heated Bed: No
    • Print Speed: 50 mm/s
  • There is no other necessary directions for print/assembly
  • Including drawings or pictures of the device at stage of assembly at minimum. (

Common Problems and Solutions[edit]

  • The most common problem is adhesion to the print bed, as the part is a large rectangle. To combat this problem, I recommend laying down a thin layer of glue (or other adhesive) to a glass print bed. This should help avoid adhesion issues.

Cost savings[edit]

  • Small densiometers can run upwards of $100
  • While this solution requires that you own a smartphone, it could also be used up against a picture or in conjuncture with a mirror. The cost of the part alone is $1, which is a 99% cost savings.

Benefited Internet Communities[edit]

Forestry Fourms

Logging Forum

Arborist Forum

Treehouse Forestry Forums

Logging and Equipment Forums


  • web page: Forestry Suppliers Inc, Available: