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A comment on Continuous 3D Printing Possible With Transparent Polygon Scanning?. Parent comment

Re:Continuous 3D Printing Possible With Transparent Polygon ... by hexa_storm on Monday August 05, 2019 @06:03PM (#20619554)
That is indeed.. how i decided to brand it and this seems working. In reality both systems have different optical properties; this does matter if you push them to the limits. Galvanometers are slow, require more calibration. Rotating devices don't stand still at the end of a sweep and are much faster (10 times).
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Re:Continuous 3D Printing Possible With Transparent Polygon ... by thawkins on Monday August 05, 2019 @11:14PM (#20621788)
Galvanometer based systems often suffer from acceleration issues at the start and end of the swing which limits the usable spread.
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Re:Continuous 3D Printing Possible With Transparent Polygon ... by sydd on Monday August 05, 2019 @06:25PM (#20619790)
the concept is really cool, congrats! Can the prototype actually print? Do you have some photos of the printed stuff?
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Re:Continuous 3D Printing Possible With Transparent Polygon ... by hexa_storm on Monday August 05, 2019 @06:31PM (#20619853)
This is how it prints on UV paper, https://cdn.hackaday.io/images/1013221548797737200.jpg . This is the calibration data recorded by imaging with the camera directly on a CMOS chip. You can count pixels.. this is what an expert needs to determine the quality. https://cdn.hackaday.io/files/21933938381472/calib_data.zip

More data is here https://cdn.hackaday.io/files/21933938381472/21measurements.... pixel 4.65 microns. You can use opencv to do the trick. I added a little script in this one.

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