Walnut Cracker

About this device
Keywords 3D printing, nut cracker, walnuts, ergonomic tool
Uses agriculture, development, industry
Authors Bharath Sadashivaiah
Status Prototype
Made? Yes
Replicated? No
Designed in United States
Cost $ 2.00
SDGs SDG08 Decent work and economic growth
Instructions data
Manufacturing files https://www.youmagine.com/designs/walnut-cracker-40-28#information
Documentation data
Language English
Manifest data
Language English
Updated 2020-06-04
Author Kathy Nativi
Author affiliation Appropedia
Author email info@appropedia.org




Walnut Cracker

Project developed by [Bharath Sadashivaiah https://www.appropedia.org/User:Bsadashi]

This Open Source Appropriate Technology has been prototyped.


Abstract

  1. Dried nuts such as walnut are grown in countries like Brazil and India Predominantly. The farmers are usually small land owners with little to no requirement for machinery. For these small scale farmers, cracking walnut with hand crusher is a tedious task and to overcome the issues of ergonomics and usability, the following walnut cracker is designed.
  2. Walnut Cracker prototype

Bill of Materials

  1. PLA filament- $2
    1. https://www.youmagine.com/designs/walnut-cracker-40-28#information

Tools needed for fabrication of the OSAT

  1. MOST Delta RepRap or similar RepRap 3-D printer
  2. PLA Filament

Skills and Knowledge Necessary to Make the OSAT

  • If you used special skill – link to relevant wikipedia or wikiversity articles/courses

Technical Specifications and Assembly Instructions

  1. From the above mentioned link of Youmagine,, Download all the STL files and print one of each stl file with infill of more than 30%.
  2. Time to assembly is less then 5 minutes

Steps to Construct

1. Print out the parts


2. insert the peg between press_cylinder and support_arm.

3. Insert the peg between the upper support arm and the handle.

4. Insert the last peg between the cylinder and the handle

Common Problems and Solutions

  • Weld the pegs shut at the ends by using a little heat so that they stay in place.

Cost savings

  • Commercially available solution cost upwards of $60.
  1. The cost to print this device is $2
  2. Saves the user anywhere between $58 to $80 and hence this device costs only about 3% of the commercially available version
  3. commercial model

Benefited Internet Communities

  • Small scale agriculture
  • Food and agriculture
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