A carriage bolt is a fastener with a smooth, domed head and a square section (the neck) just under the head. It is designed mainly for wood. When you tighten the nut, the square neck bites into the wood and stops the bolt from turning, so you only need a wrench on one side. Why … Read more
Coaxial cable and speaker wire look like they could do the same job, but they are designed for different signals. Coax carries low-power, high-frequency signals, such as TV, internet or digital audio. Speaker wire carries high-power, low-frequency current from an amplifier to the speakers. You can use coax as speaker wire in a pinch, but … Read more
Feeling cold when others are comfortable has many possible causes. Some are nutritional, the most common being low iron and low vitamin B12. Others have nothing to do with vitamins, such as an underactive thyroid. A simple blood test usually sorts it out. Iron deficiency (with or without anemia) Iron is needed to make hemoglobin, … Read more
The American Dental Association recommends replacing your toothbrush every three to four months, or sooner if the bristles are frayed. The same applies to the heads of electric toothbrushes. Why it matters Bristles wear down with daily brushing. Splayed, bent bristles reach less of the tooth surface and the gumline, so plaque is left behind. … Read more
Chest binding helps many transgender, nonbinary and gender-diverse people feel more comfortable in their bodies. Not everyone has a purpose-made binder, whether because of cost, privacy or access. Some alternatives are reasonably safe; others can cause serious injury. Never use these Do not bind with elastic or ace bandages, duct tape, packing tape or plastic … Read more
A leash is the most used piece of equipment you will buy for your dog. The right one makes walks safer and training easier; the wrong one can mean sore hands or a dog you cannot control near a road. The standard leash A flat leash of 4 to 6 feet suits most dogs and … Read more
After a wisdom tooth extraction, what you eat matters for two reasons: avoiding pain and protecting the blood clot that forms in the socket. If that clot is dislodged, you can develop a painful dry socket. Always follow the specific instructions from your oral surgeon or dentist; the list below covers the usual advice. The … Read more
Cocaine itself leaves the body quickly, but tests look for its breakdown products, which last longer. How long it can be detected depends on the type of test, how much and how often it was used, and individual factors. What tests detect The body breaks cocaine down within hours: its half-life in the blood is … Read more
You can eat a wide range of foods with braces. The goal is to avoid the few that break brackets, bend wires or get stuck, and to make the first sore days after fitting or tightening easier. Your orthodontist’s instructions come first; the American Association of Orthodontists also has patient guidance. Foods that are generally … Read more
Like people, dogs snore when airflow through the nose or throat is partly obstructed and soft tissues vibrate. Occasional snoring is usually harmless, but loud, constant or new snoring can point to a problem worth checking. Common, usually harmless causes Flat-faced breeds Brachycephalic breeds, such as Bulldogs, French Bulldogs, Pugs, Boston Terriers, Shih Tzus and … Read more
