To make required urgently a small spring — not a problem, if there is at hand a suitable steel wire. You can just use a vise and a rod of any desired diameter. The last will only need to drill blind or through hole for entry of the wire end, with the subsequent winding of the coil to a coil.
Recommend to read
SIMPLEST ANTI-THEFT DEVICE
What devices are invented so that the attackers couldn't steal a car. Steering lock, gear shift knob, wheels, dodgy electrics off, the impact on the psyche of a siren, light shows and...
COLLET-UNIVERSAL
Clutch pencil, calculated on a fat pencil, can find unexpected applications. For example, help in cases when a small screw you need to tighten in tight spaces; turn into a ballpoint pen,...
