I made a video of the inside of the Kamermaker, a HUGE 3D printer.

3D Printing
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I made a video of the inside of the Kamermaker, a HUGE 3D printer. @Ultimaker is a sponsor and contributor to this project, which is currently printing the first Canal House! It already printed sections that are taller than me, and have a 4 m2 footprint. You can visit it in Amsterdam, it’s a building site that’s publicly accessible. Check out http://3Dprintcanalhouse.com/
http://www.youtube.com/watch?v=2nDfg6_AyNQ

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This is great! Where can I find more information about the extrusion system? I have so many questions about it!

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Partners in the project were http://xtrution.com/
They supply small(ish) extruders and have quite some knowledge about this. You could get in touch with Servan Bakker.

4

Hey Erik

is the tube coming out of the filament machine is that heated or is that like the bowden tube on the Ulitmakers?

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The tube is completely wrapped in a heater element. Also, there’s quite a high pressure inside, especially at the top end.

6

Is the extrusion rate controlled, or is it open loop? If controlled, is it by pressure sensors, or does the feed screw have a calibration constant, or is there something else going on?

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Input is controlled, but kept constant. No feedback. No retraction either :wink: