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Open AccessArticle

Open Source 3-D Printed Nutating Mixer

1
Department of Electrical & Computer Engineering, Michigan Technological University, Houghton, MI 49931, USA
2
Department of Electronics and Nanoengineering, School of Electrical Engineering, Aalto University, 02150 Espoo, Finland
3
Department of Materials Science & Engineering, Michigan Technological University, Houghton, MI 49931, USA
*
Author to whom correspondence should be addressed.
Appl. Sci. 2017, 7(9), 942; https://doi.org/10.3390/app7090942
Received: 30 August 2017 / Revised: 11 September 2017 / Accepted: 11 September 2017 / Published: 13 September 2017
(This article belongs to the Section Materials)
As the open source development of additive manufacturing has led to low-cost desktop three-dimensional (3-D) printing, a number of scientists throughout the world have begun to share digital designs of free and open source scientific hardware. Open source scientific hardware enables custom experimentation, laboratory control, rapid upgrading, transparent maintenance, and lower costs in general. To aid in this trend, this study describes the development, design, assembly, and operation of a 3-D printable open source desktop nutating mixer, which provides a fixed 20° platform tilt angle for a gentle three-dimensional (gyrating) agitation of chemical or biological samples (e.g., DNA or blood samples) without foam formation. The custom components for the nutating mixer are designed using open source FreeCAD software to enable customization. All of the non-readily available components can be fabricated with a low-cost RepRap 3-D printer using an open source software tool chain from common thermoplastics. All of the designs are open sourced and can be configured to add more functionality to the equipment in the future. It is relatively easy to assemble and is accessible to both the science education of younger students as well as state-of-the-art research laboratories. Overall, the open source nutating mixer can be fabricated with US$37 in parts, which is 1/10th of the cost of proprietary nutating mixers with similar capabilities. The open source nature of the device allow it to be easily repaired or upgraded with digital files, as well as to accommodate custom sample sizes and mixing velocities with minimal additional costs. View Full-Text
Keywords: mixing; nutating mixer; shaker; stirrer; open hardware; 3-D printing; scientific hardware; open source hardware; chemical mixing mixing; nutating mixer; shaker; stirrer; open hardware; 3-D printing; scientific hardware; open source hardware; chemical mixing
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  • Externally hosted supplementary file 1
    Doi: 10.17605/OSF.IO/BQYSC
    Description: The CAD and STL files as well as a short video showing the operation of the nutating mixer.
MDPI and ACS Style

Trivedi, D.K.; Pearce, J.M. Open Source 3-D Printed Nutating Mixer. Appl. Sci. 2017, 7, 942.

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