Modular hand held arm with "Backsaver" grip attachment"
Description | Preliminary design page for Modular hand held arm with "Backsaver" grip attachment and "Leaf Claws" |
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Keywords | 3D printing, modular arm, backsaver, leaf claw, yard work, gardening |
Uses | development, industry, hobbyism |
Authors | Karan Dhankani |
Status | prototype |
Made? | Yes |
Replicated? Was this project made independently by someone other than the authors and without their guidance? | Yes |
Countries of design | United States |
Estimated cost | USD $ 5.00 |
Sustainable Development Goals |
SDG08 Decent work and economic growth SDG03 Good health and well-being |
Documentation data | |
Language | English |
Manifest data | |
Language | English |
Updated | 2020-06-04 |
Author | Kathy Nativi |
Author affiliation | Appropedia |
Author email | info@appropedia.org |
Modular hand held arm with "Backsaver" grip attachment"[edit | edit source]
Project developed by Karan Dhankani
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This Open Source Appropriate Technology has been designed but not yet tested — use at your own risk. |
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This Open Source Appropriate Technology has been prototyped. |
Abstract[edit | edit source]
With a modular setup, this device can be used as multiple tools in one. Main applications could be for people from third world countries where there is minimal automation. A shovel helper grip attachment could save a lot of effort by transferring some of the load from the user's back to the well gripped other hand. This in-turn results into lesser fatigue and more productivity.
Also, the Leaf Claws attachment can function as a big sized leaf collector hand or as even a shovel for damp yards. These type of attachments could also be used to reach certain areas (eg: for maintenance purposes in sanitation) where use of bare hands could have caused infections.
- Picture of completed print using
Bill of Materials[edit | edit source]
- 3 bolts: 5/16 inch diameter with approx 5 cm length: 38 cents x 3 = USD 1.14
- 3 Nuts that fit into those bolts: 21 cents x 3 = USD 0.63
- Hair band / Rubber band: Free?
- PLA filament: Approx 50 x 3 grams = USD 3.2
The STL files and FreeCAD files for the parts can be found here:
Tools needed for fabrication of the OSAT[edit | edit source]
- MOST Delta RepRap or similar RepRap 3-D printer
Skills and Knowledge Necessary to Make the OSAT[edit | edit source]
- Knowledge of FreeCAD and Cura
Technical Specifications and Assembly Instructions[edit | edit source]
- To Assemble: -
- Download the part files provided above in the bill of materials
- Convert stl files to gcode using software like Cura
- Print all of the Parts
- Attach a hair band / rubber band with the handle arm to make it a comfortable grip on the user's wrist
- Connect the interlocking jaws of whichever tool you want to use
- Secure with nut and bolt
- Time:
- Total print time estimate: 5 hours
- Total assembly time estimate: 3 minutes
Common Problems and Solutions[edit | edit source]
- One must be careful of your printer radius and calibration as a couple of those parts only just fit into my Delta: check how thw first couple of layers print and shrink the models if needed (all be same amount)
- Sticking to the bed could be a common problem in case of such large prints: Use high quantities of washable glue on bed before printing
Cost savings[edit | edit source]
- Cost Estimate: USD 5 for two tools
- Equivalent products in market cost: USD 33 (Backsaver grip: USD 13 and Leaf claw: USD 20)
- Net savings achieved: USD 28
References[edit | edit source]
- The sources of information (e.g. engineering handbooks, journal articles, government documents, webpages, books, magazine articles etc.). References should use the <ref> </ref> and <references/> tags and can be in any format but should include all the information necessary for someone else to find the same information you did. For example: [1]
- ↑ web page: Department of Energy (DOE) Landscaping and Energy Efficiency, DOE/GO-10095 (1995) Available: http://www.eren.doe.gov/erec/factsheets/landscape.html
[[Category:health care]] [[Category:Gardening]] [[Category:Farming]]