▼This page was part of an MTU course MSE4777 OA and MSE4777 OB/MSE5777/EE4777/EE5777: Open-source 3-D printing

Please leave comments using the talk page. The course runs in the Fall semester. It is not open edit.

The pocket wrench is an excellent example of OSAT. Wrenches are a universal necessity, especially in third world countries where buying something new, rather than repairing something, is seldom an option. In addition to this, this wrench is small and cheap to make.

Bill of Materials

1. Any 3D printable plastic
2. The link to download this design can be found here

Tools needed

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

Skills and knowledge needed

• No special skills were used to produce this wrench, other than basic 3D printing knowledge.

Technical Specifications and Assembly Instructions

1. My print was made by extruding the PLA at 240C. I used this high of a temperature because my 3D printer is located in a room that is not heated, and as such, higher extrusion temperatures are needed to allow the filament to extrude properly. The print was made using a 60% hexagonal infill, this allows for the structure to maintain its rigidity, and be used for the application. There is no assembly process, as the design is one simple printed part.
2. The print time on a delta printer was around 2 hours, using 37g of filament.
3. There is no necessary assembly involved in the finished product.
4. A picture of the CAD Drawing is located to the right.

   

Cost savings

1. The total cost to print this design is around $1.50
2. Commercial equivalent, $20+
3. 92.5% Savings

Benefited Internet Communities

• DIY