Cord Hanger V2

2024-03-21 07:28:13

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Summary

Up to 1 billion birds die annually in the U.S. because they collide with windows (https://abcbirds.org/glass-collisions/ ). Birds do not perceive windows as solid surfaces but fly toward openings or reflected images of sky and trees. Breaking up the reflection on the exterior of the glass prevents many bird fatalities. Saving only 5% from these crashes would allow up to 50 million birds to survive annually.

This instructable provides an alternative method to affix Acopian BirdSavers to your window area. Jeff Acopian created BirdSavers, an assembly of #550 paracords, to provide an easy, inexpensive, and long-lasting protection against window collisions. The paracords are spaced about 4” apart and hung vertically from the top edge of a window, typically using sheet metal screws, or cable clamps, or outdoor light clips, (see https://www.birdsavers.com/using-paracord/ ).

The method used here eliminates the use of screws or other penetrating fasteners and uses the window frame or the glass surface as the header for the BirdSavers paracords. The application can be used for brick buildings or where fastener holes are not allowed or desired on aluminum/vinyl window frames or exterior building surfaces. This method may also be helpful to those who have limited tool skills but really want to fix the hot-spot bird-killing windows on their home.

This alternative method employs a 3D printed cord-hanger that hides the paracord knot while providing a square base for attachment using a double-sided removable tape.

Standards

NGSS CCSS

Materials Needed

• 3D printer or access to one • Create a login at Thingiverse.com to download the 3D model for printing • #550 Paracord, 7 strand • Double sided acrylic tape (see description and link below) • Scissors • Matches/candle/lighter or Hotwire knife • Pencil • Tape measure • X-acto Knife