FA info icon.svg Angle down icon.svg Device data
Manufacturing files
Hardware license CERN-OHL-S
Certifications Start OSHWA certification
FA info icon.svg Angle down icon.svg Project data
Authors Luke Shaw
Years 2017
Made No
Replicated No
Cost USD 0.04
OKH Manifest Download

Safety Switch Cover for Power Strip. This object was created using FreeCAD for the use of the Principia College Science Department. Its initial use is for their optics lab. One of their power strips is connected to various sensitive light equipment. If they are turned on while the lights are on

Picture of completed print using

Source Files / Bill of Materials[edit | edit source]

  1. Fortunately, no bill of materials is required for this print. There is no additional hardware- the hinge is the only mechanical part and is printed as one piece.
  2. STLs/Open Source Software Source Files can be found at this link

Tools needed[edit | edit source]

  1. Jellybox or similar RepRap 3-D printer

Technical Specifications and Assembly Instructions[edit | edit source]

  1. Measure size of power strip switch. This should be done with high-accuracy calipers to ensure proper use.
  2. The size of the switch should match the inside perimeter of the FreeCAD file - adjust for use.
  3. Ensure height of cover will fit your switch (should be fairly universal)
  4. Print out at .1 or .2 mm layer height for best precision and hinge-usage.
  5. Place over switch, secure with epoxy or glue if necessary.
  6. ESTIMATED PRINT TIME: 5 minutes
  7. ASSEMBLY TIME: printed-as-one-piece, potential assembly if adhering with epoxy.

Cover1.PNG Cover2.PNG

Common Problems and Solutions[edit | edit source]

  • Ensure the base of the switch is secured to the power strip before use (epoxy, super glue, etc.)
  • Before adhering to the power strip, pre-bend the living hinge with your hands for best usability and to ensure the switch will sit in the "covered" position naturally.

Cost savings[edit | edit source]

  • 3D printed solution cost:

- Filament: $.03 - Electricity: $.005 Total: $.04

- Cost: $4.00 - Shipping: $13.48 Total: $17.48

  • Cost Savings: $17.44

- Almost 350% in savings! - The high shipping cost (a common occurrence with online, specialized equipment, is a huge problem that 3D printing offers a sustainable and low-cost alternative to, perfect in situations like this!)



FA info icon.svg Angle down icon.svg Page data
Keywords 3d printing, lab safety, osat, safety cover, sensitive light switches, plastic
SDG SDG09 Industry innovation and infrastructure
Authors Luke Shaw
License CC-BY-SA-3.0
Organizations Category:Principia, ENGR242
Language English (en)
Related 0 subpages, 4 pages link here
Impact 337 page views
Created April 3, 2017 by Luke Shaw
Modified June 18, 2024 by Felipe Schenone
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