How cleverly drilled a large hole thin drills
At this time, try to make a hole in the bar 50x50 mm under decent bolt 10 mm, which is much larger than the diameter of the drill available. Suppose you want to drill is lost, broken or simply forgotten at home and urgently need to find a way out. Here's what you can do using the somewhat smaller diameter drills.
In this case at hand three approximately identical drills, diameter 3.5-3.8 mm.
Step 1
take Three drills are more or less the same size and curl them a few turns duct tape. Better align the edge of the drill, which will provide an opening corresponding to the size of the bolt.
If one of the drills will perform, then it will be the axis of rotation Two other drills will move around it, giving the hole a little larger diameter than in the case of aligned in the plane of the drills.
step 2
Drills in the cartridges are inserted at such a depth that was a normal grip, but they are long enough to drill through hole in the bar is 50 mm.
If the drill bad pinch, they disperse in drilling time and break each other, but if insert is correct, everything is as it should and can be drilled repeatedly.
step 3
Now drilling. drilling speed drills three holes slightly smaller than when using a drill because they essentially vykroshivayut wood, turning it into dust.
Drilling on the course 1-2 times stops and removes debris from the hole, so he did not hammer drill and burn. But the smoke still went in this time.
So that is all. The finished insert bolt hole and checks whether the size of the opening corresponds to its diameter. One can see that everything is OK! Method load. It is clear that the whole day so you will not work, but if you want to make a dozen holes, the method is quite working.
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