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
“COMPACT-800” — Engine for UAV
Numerous gatherings of amateur aircraft designers brought together hundreds of small aviation enthusiasts, and this clearly showed that interest in designing amateur aircraft is...
…AND WITH A MAGNET
I have developed an activator of water consists of two glued together half-liter plastic bottles of kvass (their wall at the junction with a window size 170x5 mm, sometimes there are...
