If you want ordinary “card” loop was samarastroydetal like spring-loaded, easy to upgrade. For this of eyes loop is extracted axial rod, and the reverse installation is put one or two springs so that their ends rested on the loop. Eyes for necessary for this file.
Recommend to read
LaGG-3
The first flight of fighter I-301 with motor liquid cooling M-105P, created under the leadership of S. A. Lavochkin, V. P. Gorbunov and M. I. Gudkov and became the prototype of the...
RELIABLE CLOTHESPIN
Instead of the usual wooden pegs were the same, but the plastic that slid more than the former and thus hold somewhat worse. To increase their reliability can be invested inside as shown...
