Required, when a small diameter drill bit fails to hold in the Chuck. But “sewing” it is better to “size” smaller: the nail or the drill navathe thinner copper wire — tightly, turn to turn, clockwise. Now, put the resulting spiral shank right drill: when the clamp and working the spiral to wedge and securely hold it in the Chuck.
Yuri ZHDANOV, Moscow
Recommend to read
FORCING THE “D”
Device for Dismounting of bearings is shown in figure 13. They are as follows: from the bearing, remove the separator, pushing the balls enter between the collars of the bearing lugs is...
“GREY” THE BRITISH SUBMARINE FORCES
In addition to the rather exotic projects, such as, for example, a huge steam-powered submarines for action with the Navy type "K", or underwater monitors of the "M", the British Navy...
