Even when the blade cut along a wooden ruler — there is no guarantee that the edge, huddling, does not crash or find yourself on it.
This will not happen if the shaver to wear a paperclip as shown: she cut off the blade from the line and the cut goes right.
Recommend to read
“ELECTRONIC” CULTIVATOR
The idea of creating a mechanical assistant for garden cultivation came to me a long time ago. I looked through relevant issues of the “Modelist-Constructor” magazine with descriptions of...
SHINE EVEN BLOWN
Inspired by the originality of technical solution, published in the journal "modelist-Konstruktor" No. 11'78, I modified the circuit for fluorescent lamps and for many years its use in...