Any is, perhaps, too, but the hole in the tree Ø 20-55 mm this tool to drill. Drill-Perca consists of a Central rod of square section and two blades, pivotally attached to the rod. Sami knives carved from overage mills.
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THE CORNER OF THE CALIPER
It turns out that the caliper can be removed not only linear, but also angular dimensions, for example, the amount of taper or slope of different parts. To obtain such a tool, improving,...
WITHOUT THE LOCKNUT
If the bolt is of metal parts does not imply further (if necessary), disassembly, Assembly reliability can be provided without a locknut, on the proposed simple technology. For this...
