The purpose is to create a LED light holder using a plastic tie wrap.
In particular its head will accommodate the LED pins, while the tie will be fixed using strong duct tape on the spokes of my bicycle wheels for night visibility and safety.
Weight and dimensions of the system should be the smallest as possible to be almost unnoticed during the day, while providing the most effective visibility in the dark.
Step 1: Material used and preparation
Chose the tie wraps depending on the size of the LED, in particular the head of the tie should be as wide as the diameter of the LED (or even a little wider). I used 3 mm LEDs and the smallest tie wraps I could find that have a square head with side of 3.6 mm and the tie 2 mm wide.
I also used a very thin wire for wrapping (with diameter 0.25 mm for the conductor and 0.56 mm outside) and some heat shrinking tube.
With a small flat screwdriver, used as a chisel remove the inner tab of the tie wrap.
Mark the two holes for the pins 2.5 mm from each other in the middle of the head of the tie wrap.
The diameter of the holes is 1 mm because each one has to accommodate both the LED pins and the wire.