Calibration Caltrop
thingiverse
Inspired by [xammax](https://www.thingiverse.com/xammax)'s [calibration cube & circle](https://www.thingiverse.com/thing:170922). I liked his design a lot but needed a print that was more relevant to a delta printer. There is a 10 µm thick ring around the model to help center align the print. When sliced in Simplify3D this disappears but YMMV in other slicers. Designed in Autodesk Inventor 2018
Download Model from thingiverse
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