It all started with a look to a Kossel-3D calculator found here. It seems that I could compute the position of the point for a given configuration. But I would love to see the machine with a 3D perspective. I recall to ExcelUnusual’s blog, 3D tag, and some older Doka post. Also this post from ExcelFun was very inspiring. For those who are interested, here is a GitHub project on a Kossel printer.