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Q:What is the best tool to cut sheet metal?
A:Sharp tin snips or “aviation snips” with compound leverage can usually cut sheet metal up to 18 gauge. For detailed cuts, you can use a Dremel or similar rotary tool. A metal nibbler can often cut materials up to 1/8- in. thick, depending on materials, and these tools are now sold as attachments that fit onto the head of an electric drill. For straight cuts, you can use a metal-cutting circular saw blade with a high teeth-per-inch count. And if you plan on doing a lot of sheet-metal cutting in the future, you might consider purchasing some electric metal shears.
Q:Is there any way to reduce odor from a roof’s sewer vent?
A:A house’s plumbing vent is directly tied to the sewer/septic system, but normally gasses that rise from vents are carried away by the wind. Occasionally, the wind can push those gasses down toward your yard. To stop this from happening, consider installing a sewer/septic vent pipe filter, which is designed to eliminate the foul "rot- ten egg" smell originating from rooftop plumbing vent pipes. The filters usually fit onto vent pipes without tools or glue and are charged with Activated Carbon which captures the Hydrogen Sulfide (smelly gas) molecule. Note that pipe filters will only eliminate odors that originate at plumbing vent pipes; indoor odors are caused by dry drain traps and toilet wax rings that have failed.