Drill chuck, in particular manual, is not always able to keep the drill from turning when machining hard metals or release of the cutting edges of metal. It solves the problem of the groove formed triangular a file to the thrust bearing cartridge, and the corresponding drill stem processing in a winepress. D. Ovchinnikov
Recommend to read
“MODEST”, BUT DANGEROUS
Creating your armored cruisers, German Naval Ministry, headed by Admiral Tirpicz was faced with the problem, at first glance seeming ridiculous: what to do with them? In common thinking,...
TEE+PIPE+TEE=…
...No, not guess: not the water column, and not a pipeline. Young technicians secondary school in the village Pashkovsky Krasnodar territory as a result of creative "addition" to the...
