teda Miko, ja jsem taky v technickym oboru ale ta druha veta, nevim nevim, ani cesky tomu nerozumim
Ta prvni veta by mohla byt zhruba takhle:
Edge of the hole will be drilled by a drill or countersink in the angle of 90 degrees so that the screw head will be tucked into a prepared recess.
ALE je to jenom rychlovka, chce to jeste urcite trochu vydetailovat, jelikoz nemam cas a sedim v praci