Project data
Authors Erica Umlor
Completed 2019
Made? Yes
Replicated? No
Cost USD $ 4.64
Export to Open Know How Manifest
Page data
Type Project
Keywords 3D printing, acorn sheller, osat, plastic
SDGs Sustainable Development Goals SDG02 Zero hunger
SDG03 Good health and well-being
Published by Erica Umlor
Kathy Nativi
Published 2019
License CC BY-SA 3.0
Affiliations MTU
Language English (en)
Page views 162

The goal of this project is create a safer way to smash and shell acorns. There is a base where the acorn can sit that has a handle attached so the base doesn't fly away. There is also a smasher that you use to hit the top of the acorn. The little slots around the acorn holder to allow the shell to fall outward. There is the original design that is bulky, and then there is the modified design that saves filament wherever possible. The only commercial known products of this are large machinery that are not specific on how they work. Otherwise, I have only found that people hold the acorn in their hand and hit the acorns with rocks.

Bill Of Materials[edit | edit source]

Part Price Quantity
Any 3D Filament $15.00 - $20.00 1

All .stl and .scad files are here: [YouImagine Acorn Sheller]

Tools Needed[edit | edit source]

Technical Specifications and Assembly Instructions[edit | edit source]

This protoype is printed in PLA and has 20% infill. The original design took 11 hours to print. The modified design will take 13 hours. No assembly required. Place an acorn in the hole, hang onto the base handle and then use the smasher to hit the top of the acorn.

Cost Savings[edit | edit source]

  • Cost to print: Smasher - $1.62 | Base - $3.02
  • Cost to print Mod: Smasher - >$1.62 | Base - >$3.02
  • There is no commercial product available as of Decemeber 2020

Benefited Communities[edit | edit source]

  • OSHE: [1]
  • OSAT: [2]
  • Communities that eat acorns: [3]
  • YouImagine [4]
  • Thingiverse [5]