How does photochemical machining work?

Known as a photo-tool or photomask, tooling for photochemical machining consists of the negative image of the desired part or parts printed or plotted onto a piece of stable Mylar film. Once made the photo-tool appears as a film with clear areas representing the desired parts and opaque or black areas.

How does chemical and electrochemical etching work?

Electrochemical etching is an anodic dissolution process that uses electrical and chemical reactions. When the current flows between the metallic conductors immersed in an electrolyte, anodic dissolution takes place.

What is photo etching process?

Photo etching, also known as chemical etching or photochemical machining, is a highly precise, cost-effective metal machining process used to produce complex components from a wide range of metals.

What is photo intaglio?

A piece of original artwork (photograph, drawing, collage, or whatever) is reproduced onto transparent or translucent film or paper, then exposed onto a light-sensitive plate. The emulsion on the plate hardens where it receives exposure and will resist acid in the etching process.

What type of acid is used for etching?

Phosphoric acid is the most commonly used acid for etching before bonding. Nitric acid is also commercially available for etching enamel; however, it has not been studied specifically for etching in orthodontic bonding.

What is recess printing?

Definition of recess-print : to print by an intaglio-engraved die or plate a recess-printed stamp.

What is incised printing?

Intaglio describes any printmaking technique in which the image is produced by incising into the printing plate – the incised line or area holds the ink and creates the image.

What is ECM and EDM?

Both EDM and ECM are non-conventional machining methods; however, both processes have considerable differences. EDM, or electrical discharge machining, relies on localized spark erosion to remove material, whereas ECM, or electrochemical machining, utilizes electrolysis to dissolve the metal locally.