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
NOT ONLY TAILOR
Used by dressmakers for ripping the old seams convenient rezachek in the form of a two-pronged fork with a sharpened inner edges will serve to raskryvanie sheet soft plastics, as shown...
“STRUZHOK”
Wood planers used in school workshops is simple, but it does not deprive one significant drawback: the imperfection of the V-mount glands. If mishandled she tries to slip out of a plane...