I am a trainee apprentice, recently encountered a problem, that is, some screws are screwdriver screwdriver or hexagon turned no thread. Can not buckle, only in the inside idle. What is the general use of this situation to open it? Thank you, more urgent.
Drill holes, with a solid hard material grinding a screwdriver, it is embedded in the hole, so just back the thread. If the hole is too small can not drill, put the screw directly drill with a drill hole drill, drill bit and screw bottom hole the same size, and then attack the thread under the wire. It is not possible to change the number one thread.
Pistol drill drill from the back of the screw, do not drill too far
You can use a chisel in the screw cap to open a word mouth, and then use the screwdriver can be screwed down.
Next time do not move do not stand with stupid. Dripping hair dynamic ah. As for how to do bad bad. Others have already said
It seems that you do not call the thread. It seems nothing better way. You can drill a little deep groove ah
