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Inventions 2018, 3(3), 64; https://doi.org/10.3390/inventions3030064

Belt-Driven Open Source Circuit Mill Using Low-Cost 3-D Printer Components

1
Department of Electrical and Computer Engineering, Michigan Technological University, Houghton, MI 49931, USA
2
Department of Materials Science and Engineering, Michigan Technological University, Houghton, MI 49931, USA
3
Department of Electronics and Nano engineering, School of Electrical Engineering, Aalto University, FI-00076 Espoo, Finland
*
Author to whom correspondence should be addressed.
Received: 13 August 2018 / Revised: 28 August 2018 / Accepted: 30 August 2018 / Published: 5 September 2018
(This article belongs to the Special Issue Innovations in 3-D Printing)
Full-Text   |   PDF [7986 KB, uploaded 5 September 2018]   |  

Abstract

Barriers to inventing electronic devices involve challenges of iterating electronic designs due to long lead times for professional circuit board milling or high costs of commercial milling machines. To overcome these barriers, this study provides open source (OS) designs for a low-cost circuit milling machine. First, design modifications for mechanical and electrical subsystems of the OS Distributed 3-D (D3D) Robotics prototyping system are provided. Next, Copper Carve, an OS custom graphical user interface, is developed to enable circuit board milling by implementing backlash and substrate distortion compensation. The performance of the OS D3D circuit mill is then quantified and validated for: positional accuracy, cut quality, feature accuracy, and distortion compensation. Finally, the return on investment is calculated for inventors using it. The results show by properly compensating for motion inaccuracies with Copper Carve, the machine achieves a motion resolution of 10 microns, which is more than adequate for most circuit designs. The mill is at least five times less expensive than all commercial alternatives and the material costs of the D3D mill are repaid from fabricating 20–43 boards. The results show that the OS circuit mill is of high-enough quality to enable rapid invention and distributed manufacturing of complex products containing custom electronics. View Full-Text
Keywords: 3-D printing; circuit milling; circuit design; distributed manufacturing; electronics; electronics prototyping; free and open-source hardware; P2P; P2P manufacturing 3-D printing; circuit milling; circuit design; distributed manufacturing; electronics; electronics prototyping; free and open-source hardware; P2P; P2P manufacturing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Oberloier, S.; Pearce, J.M. Belt-Driven Open Source Circuit Mill Using Low-Cost 3-D Printer Components. Inventions 2018, 3, 64.

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