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DIY syringe pumps and other syringe devices are used in different 3d printing projects for depositing various materials from living cells to solder paste dispensers.Liam Gilbertson posted a very detailed tutorial on how to build your own syringe extrude from MendelMax 2.0 or any other 3D printer based on 2020 extrusion rails.
Be aware that this is not a novice level project since the extruder is very sturdy and may require some machining knowledge and more specialized tools like laser or water jet cutter able to cut 3mm aluminum.
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Step-by-step build guide, all the files and code can be found here:
http://www.instructables.com/id/Build-a-Syringe-Extruder-for-your-MendelMax-20/
GitHub repository: https://github.com/LiamGilbertson/MM2SE
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