When saw off part of the thread of the long bolt (screw, stud), in place of sawing produces burrs, dents. This makes it difficult to time the screws when screwing.
The matter is simplified if the threads are pre-screwed the nut, and then trim the bolt. When removing the nut itself will remove the burrs.
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For many years now, I constantly write and read the magazine "modelist-Konstruktor". I was particularly interested in the materials, which describes autocostruzione. But until recently...
RELIABLE SEAL
If the bath tube or sink due to the loose fitting to the drain hole allows water to enter, then restore its tightness is easiest with a rubber fingertip — just need to fit them to the tube.
