You should not use a sharpened knife or scissors for cutting sandpaper. You only blunted their blades. Easier and more effective to cut the sandpaper with an awl or other sharp object on the underside of the abrasive surface and tear the paper along the planned lines.
Recommend to read
Yak-9: FROM STALINGRAD TO BERLIN
For more than six months of heavy fighting on land, at sea and in the air. The Soviet warriors and the creators of the weapons - designers of tanks, guns, ships and planes - accumulated...
AS FOR THE VILLAGE WITHOUT A TRACTOR?
(Continued. Beginning in № 8'02) FRONT AXLE — wheels from UAZ. Balancer axle is made of steel tube section 80x80x6 mm long, the ends of which with longitudinal and transverse...
