1. Moulding or molding (USA) is a strip of material with various profiles used to cover transitions between surfaces or for decoration. It is traditionally made from solid milled wood or plaster but may be made from plastic or reformed wood. In classical architecture and sculpture, the moulding is often carved in marble or other stones.
Season 04 – Episode 12 – Part 01 – Decorative Moldings
2. A pulley is a wheel on an axle that is designed to support movement of a cable or belt along its circumference. Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit power.
A pulley is also called a sheave or drum and may have a groove between two flanges around its circumference. The drive element of a pulley system can be a rope, cable, belt, or chain that runs over the pulley inside the groove.
Season 04 – Episode 12 – Part 02 – Pulleys
3. A hose is a hollow tube designed to carry fluids from one location to another. Hoses are also sometimes called pipes (the word pipe usually refers to a rigid tube, whereas a hose is usually a flexible one), or more generally tubing. The shape of a hose is usually cylindrical (having a circular cross section).
Season 04 – Episode 12 – Part 03 – Industrial Rubber Hose
4. A vinyl compound (formula −CH=CH2) is any organic compound that contains a vinyl group (Preferred IUPAC name ethenyl), which are derivatives of ethene, CH2=CH2, with one hydrogen atom replaced with some other group. An industrially important example is vinyl chloride, precursor to PVC, a plastic commonly known as “vinyl”.
Chessboard made from polyvinyl chloride
Vinyl groups are alkene derivatives: Primary alkenes contain vinyl groups. On a carbon skeleton, sp2-hybridized carbons or positions are often called vinylic. Allyls, acrylates and styrenics contain vinyl groups. (A styrenic crosslinker with two vinyl groups is called divinyl benzene).
Season 04 – Episode 12 – Part 04 – Sheet Vinyl Flooring