A valve arrangement in the cylinder head where the valves are at an angle to the cylinder bore. Canting the valves can make for a straighter path for air to flow into and out of the intake and exhaust ports. The area of an engine in which the air/fuel mixture is burnt.
There are lighters out there designed to burn up to 2500 degrees Celsius, so it is certainly possible to find one that is up to the task if you have a project that involves melting glass. One reason that most lighters will not melt glass is that they are simply not hot enough.
Do not refill your lighter immediately after using it. You should allow enough time for the lighter to cool off. 2. The flame height adjuster on the bottom of the lighter should be set to minimum by turning CLOCKWISE with a small screw driver. The smaller, usually Phillips head, screw is for dismantling the lighter and should not be touched. The adjusting screw is a larger brass screw with a standard (slot) head.