This OSAT is a heavy-duty rope pulley that can be used to raise water from a well.^[1] This pulley can be customized to any desired size, and can be paired with multiples of itself to further increase mechanical advantage.

Bill of Materials[edit | edit source]

• The wheel and mount are designed to be printed in PLA or ABS, and the parts are customizable to any desired metric bolt size from M4 to M10.
• The parts can be customized here: http://www.thingiverse.com/thing:571542, and source files are also found here: http://libre3d.com/category/569/Hand-Tools/listings/801/OSAT-Pulley.html
• Total BOM: Printed mount, printed pulley wheel, 1 bolt for the shaft, 1 nut.

Tools needed[edit | edit source]

• MOST Delta RepRap or similar RepRap 3-D printer

Skills and knowledge needed[edit | edit source]

• Ability to operate a 3D printer and Thingiverse Customizer.

Technical Specifications and Assembly Instructions[edit | edit source]

• Assembly instructions with images can be found here: http://imgur.com/a/5Ilmk
• Print time estimate: ~4 hours, depending on the parameters entered.
• Assembly time estimate: 2 minutes

Common Problems and Solutions[edit | edit source]

• Did not experience any issues

Cost savings[edit | edit source]

• Fully customizable size: Priceless
• OSAT Total Cost: Printed parts ($1.86) + hardware($0.74) = $2.60
• Closest commercial equivalent: http://goo.gl/ClkS1T
• $8.90 savings and 77.4% savings

References[edit | edit source]