Hammer iso.jpg
FA info icon.svgAngle down icon.svgProject data
Authors Connor Kmiec
Location Michigan, USA
Status Designed
Verified by Connor Kmiec
Made Yes
Replicated No
Cost 5.23
Uses development, industry, gardening
OKH Manifest Download
FA info icon.svgAngle down icon.svgDevice data
Hardware license CC-BY-SA-4.0
Certifications Start OSHWA certification

This OSAT project is a carpenter's hammer. In order to be heavy enough and duable enough to drive nails, a bolt is used for the hammering surface. The resulting product is a very strong hammer that can drive and remove nails. This hammer is an appropriate OSAT because a hammer is one of the most basic and necessary tools to build a structure. A hammer like this would be easy to print, low cost, and fill a real need for a developing area.

Link to Thingiverse page where customization can be done to the tool: http://www.thingiverse.com/thing:1182261

Bill of Materials[edit | edit source]

CAD Files


Extra Parts

  • 3/4" x 3.5" bolt

Tools needed[edit | edit source]

  1. MOST Delta RepRap or similar RepRap 3-D printer
  2. 1/18" wrench for bolt installation.

Skills and knowledge needed[edit | edit source]

  • There is no special skills needed to make this tool.

Technical Specifications and Assembly Instructions[edit | edit source]

  1. If any changes to the design want to be done, open the SCAD file and adjust the parameters.
  2. Slicing instructions
    1. Fill % = 100 (Less infill could probably be used)
    2. Speed = 50 mm/sec
    3. Layer Height =.15 mm
    4. No support Needed
    5. I recommend using a brim on the print
    6. Print the hammer standing up, hammer head end down
  3. Print time with above settings will be about 15 Hours
  4. Tread bolt into hammer with a wrench after printing.

Common Problems and Solutions[edit | edit source]

Bolt can be difficult to thread into the hammer, I used a vise to hold the hammer stationary.

Cost savings[edit | edit source]

  • Filament needed: 235 grams @ $18.39/kg = $4.32
  • Hardware needed: 1 bolt @ $0.91
  • At a total cost of $5.23

Commercial Equivalents

  • Equivalents range from $9.97 ([1]) to $199.97 ([2])

Saving amount

  • The savings are anywhere from $4.74 to $194.74
  • The percentage saved ranges from 47.5% to 97.4%

Gallery[edit | edit source]

References[edit | edit source]

FA info icon.svgAngle down icon.svgPage data
Keywords 3d printing, construction, gardening, hammer, osat, tools, shelter, plastic
Authors Connor Kmiec
License CC-BY-SA-3.0
Organizations MTU, MOST, MY4777
Language English (en)
Related 0 subpages, 6 pages link here
Impact 689 page views
Created November 17, 2015 by Connor Kmiec
Modified January 29, 2024 by Felipe Schenone
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