it, some pins might be too loose, while others could be overly stiff, resulting in a tool that either fails to close properly or risks bending the wire prematurely. In other words, the hole is a small but indispensable piece of precision engineering.
Spring mechanisms in many tools and devices use similar features during assembly. Whether it’s in clocks, small appliances, or fastening devices, anchor points during the coiling process are a standard engineering solution for maintaining reliable tension and torque. The safety pin, though simple in appearance, is no
