3D printed backpack snap-fit clips

This type of clip is found on a variety of items, most commonly backpacks, and work well. However, I have found that if you break one, it is difficult to find a replacement, and are overpriced (typically $2-6 for 1 set!). Since it is made of plastic and only plastic, I wanted to make a parametric OpenSCAD design. There are many designs for there out already, however few provided source code and even fewer were scalable.

Bill of Materials

• Filament of your preferred color
• Design files as found here

Tools needed

• MOST Delta RepRap or similar RepRap 3-D printer
• Exacto knife or similar product for removing support structures

Technical Specifications and Assembly Instructions

• Print out the part. Be sure to generate supports for the print. Be prepared to spend time removing the the support structures.
• Print time: ~40 mins

Cost savings

• 3D printed part: ~50 cents (depending on size)
• Commercial part: $2-$6
• Minimum cost savings of 75%