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Modular hand held arm with "Backsaver" grip attachment and "Leaf Claws"
- 1 Modular hand held arm with "Backsaver" grip attachment"
- 2 Abstract
- 3 Images
- 4 Bill of Materials
- 5 Tools needed for fabrication of the OSAT
- 6 Skills and Knowledge Necessary to Make the OSAT
- 7 Technical Specifications and Assembly Instructions
- 8 Cost savings
- 9 References
Modular hand held arm with "Backsaver" grip attachment"
Project developed by Karan Dhankani
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. The stl files can be downloaded from here: http://www.thingiverse.com/thing:1183651
- Fully assembled hand held shovel grip
- Example of application of Shovel Helper - Backsaver
- Example of application of a Leaf Claw application - Backsaver
- Modular handle arm with three fixture holes
- One of the two shovel helper that fits into the modular handle arm
- Leaf Claw that fits into the modular handle arm
Bill of Materials
- 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
Tools needed for fabrication of the OSAT
- MOST Delta RepRap or similar RepRap 3-D printer
Skills and Knowledge Necessary to Make the OSAT
- Knowledge of FreeCAD and Cura
Technical Specifications and Assembly Instructions
- 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
- Total print time estimate: 5 hours
- Total assembly time estimate: 3 minutes
Common Problems and Solutions
- 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 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 (Atleast)
- Similar products online:
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