Sand Blaster Abrasive

Sand Blaster Abrasive

What You Need to Know About Etching

Another beautiful way to imprint promotional products, etching is often mistaken for engraving. Though the results are similar, the process behind the two are totally different. Engraving uses either a graver (can be a rotating carbide cutter or a diamond drag) or laser to cut into metal and other hard-surface items. Etching, on the other hand, uses strong acids or other abrasives to cut into the unprotected parts of the substrate. The most common use for etching is on a metal or glass surfaces.

How It's Done

Etching Metals

The metal to be imprinted is coated with an acid-resistant substance (also called a resist, it is usually a waxy ground). The etcher then exposes the image to be imprinted.

Traditional methods of exposing an image utilizes an etching needle or an échoppe for sloped lines. Today, most etching companies use photographic means. A photo-negative of the artwork is prepared. This image is then exposed on the photo-sensitive surface of the metal. This step results in exposed and a protected metal portions.

The metal then goes through an acid bath or an acid wash. During this process, the acid eats away at the bare metal leaving a fine image on the surface of the product. This process is called “biting”.

Once the image has successfully been transferred onto the substrate, it is washed over with water. Finally, the resist is removed with a solvent.

Etching Glass

There are two ways to etch glass:

First, glass etchers can either use acidic, caustic or abrasive substances. In the 1920's, manufacturers developed the mold-etch process to significantly reduce costs for labor-intensive glass etching. Here, art is etched directly onto the mold so that each piece cast from it comes out with the image already etched on the glass. This process involves extremely hazardous acids, so most etchers still prefer the use of abrasive elements. Fluoride compounds are the most popular abrasives used for glass.

The second way to etch glass is with a sand blaster. The glass is covered with a template that has a design cut out of it. When blasted with silicone sand, only the unprotected portions are etched into the glass.

About the Author

Remy is a Promotional Adviser specializing on Low Cost Promotional Items, Promotional Products Blog and Promotional Ideas Blog

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Blaster $10 Blaster

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ALC Keysco ALCF50 Siphon Feed Sand Blaster Kit with 50lb Capacity $175.48 Features and Benefits: 80125 PSI Hose Size: 3/8 Inside Diameter x 7 ft. Includes three steel nozzles; sizes13/64 1/4 and 5/16 and three air jets; sizes5/64 1/8 and 5/32 Includes a two year warranty Made in the USAThis F50 model siphon feed sand blaster is a free standing open top tank which has a 50lb. capacity. It s portable simple to use with professional results. Use with abrasives or liquids on metal wood cement plastic or other surfaces. Easy to set up and operate.

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Abrasive $89.22 An abrasive is a material, often a mineral, that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away. While finishing a material often means polishing it to gain a smooth, reflective surface it can also involve roughening as in satin, matte or beaded finishes. Abrasives are extremely commonplace and are used very extensively in a wide variety of industrial, domestic, and technological applications. This gives rise to a large variation in the physical and chemical composition of abrasives as well as the shape of the abrasive. Common uses for abrasives include grinding, polishing, buffing, honing, cutting, drilling, sharpening, lapping, and sanding (see abrasive machining). (For simplicity, mineral in this article will be used loosely to refer to both minerals and minerallike substances whether manmade or not.) Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 120 Publication Date: 2010/01/06 Language: English Dimensions: 5.98 x 9.01 x 0.28 inches

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ALC Keysco Siphon Feed Sand Blaster Kit w/50lb Capacity. Each $121.58 Manufacturer: ALC Keysco. Each. Features Benefits: 80-125 PSI Hose Size: 3/8" Inside Diameter x 7 ft. Includes three steel nozzles; sizes-13/64", 1/4", and 5/16" and three air jets; sizes-5/64", 1/8" and 5/32" Includes a two year warranty Made in the U