These are wing ribs for a light flight model aircraft http://www.depronfoam.co.uk/html/free_plans.html
and is being run on a home made CNC https://www.youtube.com/watch?v=gzLYNSQEPDk&index=7&list=PLFInI-s2m04EWYGCFUm8tFWxbZhoi7NN- with an ARDUINO
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