Hand cultivator

Hand Cultivator

Created by Matthew Andres

This Open Source Appropriate Technology has been designed but not yet tested — use at your own risk.

This Open Source Appropriate Technology has been prototyped.

This Open Source Appropriate Technology has been modeled.

This Open Source Appropriate Technology has been verified by Matthew Andres

Abstract

1. This OSAT is a hand cultivator. It is used to clear land and to assist in gardening tasks. This is an appropriate tool because it assists in making a better garden that will produce more crops. According to Midwest Gardening ^[1] cultivating has many benefits. They state that cultivating allows easier penetration of air, nutrients and water into the sun and wind dried soil. Cultivating also remove weeds that steal water and nutrients from the plants. Less supplemental watering is also a benefit gained from cultivating. By using a plastic tool, there is the benefit of the tool never rusting and allows for easy cleaning.
2. A Completed Hand Cultivator can be seen on the right
   
3. Link to Thingiverse page where customization can be done to the tool: http://www.thingiverse.com/thing:1158335/#files

Bill of Materials

CAD Files

STL

Extra Parts

• There are not other parts needed for this tool.

Tools needed for fabrication of the OSAT

1. MOST Delta RepRap or similar RepRap 3-D printer

Skills and Knowledge Necessary to Make the OSAT

• There is no special skills needed to make this tool.

Technical Specifications and Assembly Instructions

1. If any changes to the design want to be done, open the SCAD file and adjust the parameters.
2. Slicing instructions
   1. Fill % = 100
   2. Speed = 50 mm/sec
   3. Layer Height = .12 mm
   4. No support Needed
   5. I recommend using a brim on the print
   6. Make sure prongs are facing up
3. Print time with above settings will be about 11 Hours
4. There is no assembly time

Cost savings

Cost of creating this hand cultivator

  *Filament needed: 130.8
  *At a cost of $23 a kilogram the total cost of the tool is $2.88

Commercial Equivalents

  *Equivalents range from $3.74 (cultivator 1) to about $21 (cultivator 2)
  *They range in materials from composites to most of them being made of metal. 

Saving amount

  *The savings are anywhere from $.86 to $18.12
  *The percentage of the cost is from 77% of the cost of the cheap one to 13.72% of the expensive one

Gallery

References