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3.7.5. Removal of fixture by drilling

If the bolt or a nut cannot be turned out in the above-stated ways, then only drilling which you carry out as follows will help:
– a big drill drill a bolt head. If necessary before it it is possible to drill on the center of a head of a bolt a preparatory opening a small drill;
– either beat out the remained carving part, or take out flat-nose pliers;
– if it does not work well, accurately drill through a carving part a drill, smaller face value the corresponding carving, and remove the remained metal from a reciprocal part.