As you know, carrying sharp objects without case – for example, ski poles, public transport is not permitted. Existing ferrules, no skier no use: they are plastic, from the cold lose their elasticity to be back on lost. I have for several seasons used homemade tips red medical tubing Ø 10 mm. rubber held tightly on a stick, and if necessary easily replaced.
P. DIDENKO, Krasnoyarsk
Recommend to read
UNUSUAL HAND DRILL
The originality of this tool is that you can work with him with one hand. Dignity, which is quite appreciated by homebrew: there are plenty of places where conventional two-handed drill...
THE INSTRUMENT FOR TESTING LOW-POWER TRANSISTORS
For its production you will need two capacitors, a resistor and phone capsule (see diagram). Removing the insulation pad under the membrane of the phone parts are mounted directly in the...