tech e blog

If you've always wondered how gypsum board (drywall) was manufactured, then check out this interesting "How it's Made" segment. Video after the break.

drywall panel is made of a paper liner wrapped around an inner core made primarily from gypsum plaster, the semi-hydrous form of calcium sulphate. The raw gypsum must be calcined before use

If you've always wondered how shovels were manufactured, then check out this interesting "How it's Made" segment. Video after the break.

Hand shovel blades are typically made of pressed sheet steel, folded at the back to make a socket for the handle. The handles are usually made of wood, although steel or even lightweight composite materials may also be used, and is riveted in place

If you've always wondered how hacksaw blades were manufactured, then check out this interesting "How it's Made" segment. Video after the break.

..blade has many small saw teeth along one side. The blade can either be attached such that the teeth face away from the handle, resulting in sawing action by pushing, or be attached such that the teeth face toward the handle, resulting in sawing action by pulling

If you've always wondered how glass bottles were manufactured, then check out this interesting "How it's Made" segment. Video after the break.

In all cases a stream of molten glass at its plastic temperature (1050°C-1200°C) is cut by a shearing blade to form a cylinder of glass called a gob. Both of the processes start with this gob falling by gravity and guided by troughs and chutes into the blank moulds

If you've always wondered how goalie masks were manufactured, then check out this interesting "How it's Made" segment. Video after the jump.

The second one is a fiberglass mask with a cage attached in the middle. The goalie mask can also be made out of Carbon Fibre, or a Fibreglass and Kevlar mix. These masks are able to better withstand the impacts of hockey puck at higher speeds, and are generally used at major junior, college and professional levels

If you've always wondered how drums were manufactured, then check out this interesting "How it's Made" segment. Videos after the break.

Differing music styles implement the components of a drum kit in different manners. For example, in most forms of rock music, the bass drum and snare drum are the primary instruments used to create a drum beat. In jazz, however, the ride cymbal and hi hats (or brushed snare drum and hi hats) usually fill this role

If you've always wanted to learn about the process of glassblowing, then check out this interesting "How it's Made" segment. Video after the break.

Glassblowing is a glassforming technique that involves inflating the molten glass into a glass blob with the aid of the blowpipe. A person who blows glass is called a glassblower, glassmith, or gaffer

If you've always wondered how nuts and bolts were manufactured, then check out this interesting "How it's Made" segment. Video after the break.

Screws and bolts are made in a wide range of materials, with steel being perhaps the most common, in many varieties. Where great resistance to weather or corrosion is required, stainless steel, titanium, brass or bronze may be used, or a coating such as brass, zinc or chromium applied

If you've always wondered how filing cabinets were manufactured, then check out this interesting "How it's Made" segment. Video after the break.

In the US, these come in two sizes: for letter-size paper and legal-size paper. UK file cabinets are slightly different from US in the width of the rails which support the suspension files, the US ones being narrower; the UK sizes are known as A4, foolscap and A3

If you've always wondered how airplane propellers were manufactured, then check out this interesting "How it's Made" segment. Video after the break.

Propellers are similar in aerofoil section to a low drag wing and as such are poor in operation when at other than their optimum angle of attack. Control systems are required to counter the need for accurate matching of pitch to flight speed and engine speed