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Expanding pipe mandrel (configurable)

Expanding pipe mandrel (configurable)

thingiverse

This device inflates inside a tube, providing internal support and enabling you to "zip" a sheet metal tube back into place, cut a sheet metal tube without the danger of it "unzipping," cut holes in it etc.\r\n\r\nThe STL is designed for 10cm tubes, with tool expansion ranging from 9cm to 11cm, using a 6cm bolt with ~8mm diameter.

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