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== Cost savings== | == Cost savings== | ||
* If your solution is not a low cost one then it is not really appropriate. | * If your solution is not a low cost one then it is not really appropriate. | ||
# | # Costs for this hand-drill | ||
# | * 3D printed drill = $.25 | ||
# | * Drill bit = $1.31 each [https://www.mcmaster.com/#2931a11/=17gho4s Source Link] | ||
* OPTIONAL Spring = $1.40 each [https://www.mcmaster.com/#9657k439/=178iw9i Source Link] | |||
* TOTAL: $ 2.76 | |||
# Commercial Equivalent | |||
* $72.50 Spring Loaded Push Drill [http://www.garrettwade.com/garrett-wade-yankee-push-drill-gp.html?scid=W4011000&gclid=CjwKEAjw3KDIBRCz0KvZlJ7k4TgSJABDqOK7gYO2vcjWjWNRMwKlAOlyfDBY7yFAoVMPz4q8u9-lEhoC7_Tw_wcB Source Link] | |||
* $15 for shipping per their calculated shipping policy | |||
* TOTAL: $87.50 | |||
# $ savings and % savings | |||
* A total savings of $84.74, or more than 3000% in savings. | |||
<nowiki> | <nowiki> |
Revision as of 01:26, 3 May 2017
Hand Pump Drill (Spring-Loaded)
Project developed by [Limitless285]
Template:Statusboxtop Template:Status-prototype You can help Appropedia by contributing to the next step in this OSAT's status. Template:Boxbottom
Abstract
- This Hand Pump Drill is a mechanical drill that utilizes human effort to perform the functions of a drill. In locations where power tools are too expensive or there is little access to electricity, a hand drill is an effective solution. 3D printing these means they can be very cost efficient - less than $0.25 in filament, a spring, and drill bits.
- First Draft
- First Draft w/ Spring
- Final Draft image coming soon!
Bill of Materials
- Materials Needed:
- Drill Bit(s) of varying sizes - any standard drill bits should fit this drill.
- (OPTIONAL) Spring to have spring-loaded capabilities: Purchase here
- STLs and Open-Source (Blender) Source Files Download
Tools needed for fabrication of the OSAT
- Jellybox or similar RepRap 3-D printer
Technical Specifications and Assembly Instructions
- This print should take about 4 hours (I printed three different prints - one with 3 pieces, one with 2, and one with 1). These could all be printed in one go, reducing print time drastically.
- Assembly should take no more than 5 to 10 minutes.
- Print all part at .1 mm resolution (lower resolution may still work, but have not been tested)
- All parts should be printed vertically. The end-handle should be printed with the hole on the narrow end facing up.
- Insert spring-slide over the drill body. After a few rotations, it should revolve smoothly.
- Place the chuck-jaws into the drill body with the jaw-cover screwing into the body over the chuck-jaws
- If a spring is being used, place the spring Spring sized for this print over the drill body before securing the jaw-cover
- Attach the end handle to the spring-slide
Common Problems and Solutions
- Apply lubricant to the drill body (should not be necessary)
- Ensuring the end-handle is printed with the hole facing up ensures accurate sizing and print quality for a snap-fit.
Cost savings
- If your solution is not a low cost one then it is not really appropriate.
- Costs for this hand-drill
- 3D printed drill = $.25
- Drill bit = $1.31 each Source Link
- OPTIONAL Spring = $1.40 each Source Link
- TOTAL: $ 2.76
- Commercial Equivalent
- $72.50 Spring Loaded Push Drill Source Link
- $15 for shipping per their calculated shipping policy
- TOTAL: $87.50
- $ savings and % savings
- A total savings of $84.74, or more than 3000% in savings.
Based on the developmental needs addressed (e.g. food, heat, electricity, clean water, health care, etc.) be sure to label your device in the proper categories e.g. use [[Category:Water]]. Be sure to categorize your device so that it will be easy to find – for example “Low voltage connection basics” is categorized in [[Category:How tos]] [[Category:Electricity]] [[Category:Electric lighting]].