Work with roller glass cutter will be much more accurate if the basis for such processing, as shown in the figure.
Recommend to read
Glider model class A1
At competitions of the Moscow schoolchildren model pupil of the 55th school Igor Svistunov in adverse weather conditions (wind of 6-10 m / s) scored 501 points. Only breaking model at...
THE KEY TO THE LOCK — UP RESISTOR
In the fourth issue of the journal for the year 1978, published schemes of electric locks with a "secret". They all work well, but they, in my opinion, there is one drawback: the locks...