Copper is a chemical element with the symbol Cu and atomic number 29

Copper is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish. It is used as a conductor of heat and electricity, a building material, and a constituent of various metal alloys.
The metal and its alloys have been used for thousands of years. In the Roman era, copper was principally mined on Cyprus, hence the origin of the name of the metal as сyprium (metal of Cyprus), later shortened to сuprum. Its compounds are commonly encountered as copper(II) salts, which often impart blue or green colors to minerals such as turquoise and have been widely used historically as pigments. Architectural structures built with copper corrode to give green verdigris (or patina). Decorative art prominently features copper, both by itself and as part of pigments.
Copper was one of the first metals to be worked into implements and the first metal to be smelted from ores. Its excellent ductility and high conductivity assure its use in modern society.The CAS number is 7440-50-8, the molecular formula is Cu and the molecular weight is 63.55 g/mol.

From:http://www.cpd-cpd.com/Metal-evaporation-materials/Copper-wire-/

How to Make Gold Wire Name Bracelets

Custom jewelry is always in style. It takes many forms, from classic signet cufflinks engraved with the initials of the wearer to necklaces and bracelets in bold specifying a name. Typically shaped with silver or gold metal, jewelry name can be bought or ordered by a variety of jewelry retailers and manufacturers. It is both fun and easy, however, do it yourself. Using simple tools and rare materials, you can create personalized name bracelets in gold metal.

Write your name in cursive with a pencil and paper. Make your signature on the size you want it to appear on your bracelet. Practice until you get the size and the letters as you want. Plan to use your signature as a template that you replicate in gold thread.

From: http://www.cpd-cpd.com/Metal-evaporation-materials/Gold-wire/

Oracet blue B

Product name:Oracet blue B
CAS:12769-16-3
Molecular formula:C21H16N2O2
Molecular weight:328.37
Description:
Appearance:Purple blue powder
Properties:Insoluble in water. Melting point 75 ~ 78 ℃.
Uses:Titration indicator. Lipids staining.
Storage:Sealed in a cool dry place away from light.

From:http://www.chemical-reagent.com/products/Oracet-blue-B_35a019a0/

Production of Shellac

Shellac is scraped from the bark of the trees where the female lac bug, Kerria lacca, Order Hemiptera, Family Coccidae secretes it to form a tunnel-like tube as it traverses the branches of tree. Though these tunnels are sometimes referred to as "cocoons", they are not literally cocoons in the entomological sense. This insect is in the same family as the insect from which cochineal is obtained. The insects suck the sap of the tree and excrete "stick-lac" almost constantly. The least coloured shellac is produced when the insects feed on the kursum tree, (Schleichera trijuga). The raw shellac, which contains bark shavings and lac bug parts, is placed in canvas tubes (much like long socks) and heated over a fire. This causes the shellac to liquefy, and it seeps out of the canvas, leaving the bark and bug parts behind. The thick, sticky shellac is then dried into a flat sheet and broken into flakes, or dried into "buttons" (pucks/cakes), then bagged and sold. The end-user then crushes it into a fine powder, mixes it with ethyl alcohol prior to use to dissolve the flakes and make liquid shellac.

From:http://www.chemical-reagent.com/products/Shellac/

How to Perfect a Shellac Finish

Shellac finishes have been used on furniture for centuries. Today, these finishes can be applied easily with a brush or a pad at a nominal cost. Whichever method of application you choose, following these steps will help you perfect a shellac finish.

1.Choose a well ventilated workplace and protect the surrounding area with a cloth or newspaper before applying the Shellac .
2.Select either brush or pad to apply your finish paint and assemble all your equipment so when you start your project, you have at hand.
3.Sand your piece of wood so that preparation for the shellac.Use a soft cloth and wipe off any residue. Make sure your room is dust-free before shellac.

From:http://www.chemical-reagent.com/products/Shellac/