13-05-13, 06:50 AM
Burning out drill bits!!! :eek
If you use a drill at high speed then the bits get red hot and go soft.So you must use a very slow speed electric drill to drill steel and lots of pressure.
If you use a drill at high speed then the bits get red hot and go soft.So you must use a very slow speed electric drill to drill steel and lots of pressure.
An ageing test pilot for home grown widgets that may fail at anytime.