Thingiverse

Closing scissor blade with trigger by andrewjmoulton90
by Thingiverse
Last crawled date: 4 years, 1 month ago
This is an assembly that only requires a metal spring to operate. Place the spring between the compliant rack and the base.
Here is the link for the spring. It is the longer one in the set:
http://www.homedepot.com/p/Everbilt-1-4-in-x-1-1-2-in-and-11-32-in-x-1-7-8-in-Zinc-Plated-Extension-Spring-4-Pack-16086/202045462
Also check out this video of the thing working.
https://youtu.be/ok1IWjmO5H0
Best of luck!
Here is the link for the spring. It is the longer one in the set:
http://www.homedepot.com/p/Everbilt-1-4-in-x-1-1-2-in-and-11-32-in-x-1-7-8-in-Zinc-Plated-Extension-Spring-4-Pack-16086/202045462
Also check out this video of the thing working.
https://youtu.be/ok1IWjmO5H0
Best of luck!