Removing stuck fasteners
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(→Miscellaneous tips) |
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*Where access allows, put a box end wrench over a stripped nut or hex bolt head, then use a centrepunch on the corners of the hex to spread the metal and wedge it in the wrench. | *Where access allows, put a box end wrench over a stripped nut or hex bolt head, then use a centrepunch on the corners of the hex to spread the metal and wedge it in the wrench. | ||
*If the bolt or stud breaks off below the surface, try this. Using a high grade bolt of same size, grind off the threaded end until the bolt will fit into the hole and touch the broken bolt. Using an electric welder, clamp the "electrode" bolt in the stinger. This works best if someone is there to help you by turning the welder on and off. With the stinger bolt inserted into the broken bolt hole and firmly against the broken bolt, have the power turned on just long enough to fuse the stinger bolt to the broken one. You might want to practice this technique on the bench to get the power and timing right. Once they have cooled for a few minutes, but are still hot enough to burn skin, place a wrench on the slave bolt and turn them out. | *If the bolt or stud breaks off below the surface, try this. Using a high grade bolt of same size, grind off the threaded end until the bolt will fit into the hole and touch the broken bolt. Using an electric welder, clamp the "electrode" bolt in the stinger. This works best if someone is there to help you by turning the welder on and off. With the stinger bolt inserted into the broken bolt hole and firmly against the broken bolt, have the power turned on just long enough to fuse the stinger bolt to the broken one. You might want to practice this technique on the bench to get the power and timing right. Once they have cooled for a few minutes, but are still hot enough to burn skin, place a wrench on the slave bolt and turn them out. | ||
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| + | *As an aircraft mechanic in the Army, I discovered a tip for removing stubborn Phillips-head screws. Wet the tip of the screwdriver or screwdriver bit, a little bit of spit will do, and dip the bit into a bit of abrasive cleanser - like Comet. Use enough to cover the tip of the screwdriver. The abrasive in the cleanser gives the tip of the screwdriver a little added "bite" and it's less likely to slip out of the screw. Just about every mechanic in the hangar had a small bottle of cleanser in their toolbox for just this reason. - Dusty82 | ||
==References== | ==References== | ||
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