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Title: Rapid Prototyping of Printed Circuit Boards Using an Engraving Laser PDF
Url: http://search.asee.org/search/fetch?url=file%3A%2F%2Flocalhost%2FE%3A...
Creator: Beams, David
Moutain, Jeffrey
Publisher: ASEE Manufacturing Division
Description: Lack of a good system for rapid prototyping of printed circuit boards has been a major bottleneck in Senior Design at the University of Texas at Tyler. A simple method using artwork printed on toner-transfer paper and transferred through heat and pressure to copper-clad circuit-board stock had been successfully applied to simple designs but showed itself to be unsuited to the complexity of printed circuit boards developed for senior design projects. This unsuitability was due to two factors; low density (due to inability to accurately control line widths) and highly variable results. Alternative methods have their drawbacks. Tooling charges for commercially-produced circuit boards are expensive if only a small number of examples are to be built. Inexpensive prototype printed-circuit boards can be obtained from specialty circuit board vendors, but these vendors usually require the use of their proprietary software. Small high-speed milling machines that can cut circuit traces are available, but it is difficult to justify the expense of a dedicated circuit board mill for annual production of a few circuit boards. An alternative being investigated by the University of Texas at Tyler is the use of a CO2 engraving laser as the principal patterning element in a system for rapid prototyping of printed circuit boards (PCBs). The engraving laser was acquired principally for research into microfluidic devices, but it appeared that it might be an effective way of patterning masks for chemical etching of copper-clad circuit board material. Efforts have so far focused on ablating a thin film of a resist material, leaving copper cladding exposed to chemical etching in the areas where the resist was ablated. Marking, scoring, and drilling with the laser have also been attempted. This paper describes the methods and accomplishments to date as well as directions for future work.
LC Classification: Technology -- Electrical engineering. Electronics. Nuclear engineering -- Electrical engineering. Electronics. Nuclear engineering -- Electronics -- Electronic circuits (General) -- Special circuits (General) -- Printed circuits
Technology -- Engineering (General). Civil engineering -- Engineering (General). Civil engineering (General) -- Applied optics. Photonics -- Lasers and laser applications
Technology -- Manufactures -- Production management. Operations management -- Product engineering -- Product design. Industrial design
GEM Subject: Science -- Engineering
Science -- Instructional issues
Vocational Education -- Trade and industrial
Key Concept: Physics -- Circuits
Physics -- Lasers
Resource Type: Reading Materials
Science Materials
Teaching Guides
Format: pdf
Audience: College/University Instructors
Higher Education
Secondary Education
Technical School First Cycle
Technical School Second Cycle
University First Cycle
University Second Cycle
Vocational Training
Language: English
Access Rights: Free access
Date Of Record Release: 2011-11-09 03:00:02 (W3C-DTF)
Date Last Modified: 2012-05-31 14:06:20 (W3C-DTF)
Source Type: ATE Center
Source: National Center for Manufacturing Education
Full Record Views: 136
Resource URL Clicks: 98
Cumulative Rating: NOT YET RATED
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