Welders help build the world. In fields from construction to car racing to manufacturing, welders use their skills to fuse metal together to the proper specifications and strength. If you're interested in learning to become a welder, there...
A pair of sunglasses seems so simple -- it's two pieces of tinted glass or plastic in some sort of plastic or metal frame. How much more straightforward can something get? It turns out that there are many different things you can do with two pieces of glass, and these things can have...
A pair of sunglasses seems so simple -- it's two pieces of tinted glass or plastic in some sort of plastic or metal frame. How much more straightforward can something get? It turns out that there are many different things you can do with two pieces of glass, and these things can have...
A welder is a trained technician who uses high heat and gas to fuse metal pieces or fill and fix defects in metal structures. An individual in the welder career path utilises heat to melt various metals, like brass, stainless steel, or aluminium, to make or repair metal items or products...
This graphic shows a simple metal oxide varistor (MOV) surge protector with line conditioning and a fuse. HowStuffWorks In the most common type of surge protector, a component called a metal oxide varistor (MOV) diverts the extra voltage. As you can see in the diagram to the left, an...
A drum is basically a metal roller covered by a layer of photoconductive material. This layer is made out of a semiconductor such as selenium, germanium or silicon. What makes elements like selenium so cool is that they can conduct electricity in some cases, but not in others. In the dark...
relies on several devices rather than just one—for example, a transient voltage suppressor (TVS) for overvoltage protection, an in-line fuse for overcurrent protection, a series diode for reverse battery/supply protection, and a mix of capacitors and inductors to filter out lower energy spikes...
Lack of fusion is a dangerous welding defect that occurs when the weld metal does not fuse completely with the base metal or previous weld passes. Lack of fusion creates weak spots in the weld that can lead to cracking or separation under stress or load. ...
When two metal surfaces need to be joined together and they can't be melted, you'll be reaching for your trusty soldering iron. Soldering makes use of the fact that different metals have different melting points -- using a metal alloy with a lower melting point than the two you're joinin...
If you find a rough spot, you may be able to smooth it with an emery board or light sandpaper. If this doesn't work -- or if you have to cut to bare metal to remove the roughness -- the tub should be replaced. In this case, it's probably much wiser to replace the entire ...