Metal

https://de.wikipedia.org/wiki/Metalle

In 3D printing, ABS or PLA is usually used as the base material, to which a mixture of metal powder (copper, stainless steel, iron, bronze or brass) has been added. The squeezed out objects look and feel like metal.

Brass

Brass is an alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties. Brass is a substitutional alloy. It is used for decoration for its bright gold-like appearance; for applications where low friction is required such as locks, gears, bearings, doorknobs, ammunition, and valves; for plumbing and electrical applications; and extensively in musical instruments such as horns and bells for its acoustic properties. It is also used in zippers. Because it is softer than most other metals in general use, brass is often used in situations where it is important that sparks not be struck, as in fittings and tools around explosive gases.

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Light bulb

The incandescent light bulb, incandescent lamp or incandescent light globe produces light by heating a filament wire to a high temperature until it glows. The hot filament is protected from oxidation in the air with a glass enclosure that is filled with inert gas or evacuated.

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Industrial

The industrial look impresses primarily with its raw material composition and coarsely finished design. Luminaires, furniture and tables have been designed for work use and should above all be stable and practical. Rivets, fittings and wheels etc. are shown openly and are an important component for the statement and affiliation of the industrial look. Metal is one of the primary materials used, raw, rust-look or powder-coated. Wooden elements with a sandblasted look or coarse grain, wood in combination with metal and coarse leather complete the statement. The style lives from the unfinished, imperfect and roughly finished.
Black, grey, rust, flaky colours (vintage) and brown tones on wood and leather are dominant colours. Leather is important for sofas, chairs and armchairs. Wearing vintage carpets and cow skins lie on raw ground.
The luminaires are dominated by large metal shades, often with "Eddison Style" bare glowers.