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Problem printing column

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Posted · Problem printing column

Hi, I am trying to print a column with 100% fill, and it starts out great until about 1cm up when the nozzle starts pushing around material to the edge, creating a lip that looks bad. I tried printing slower, 50mm/s and it still occurred, only slightly higher. I'm printing at 230C. Not sure why it would suddenly mess up every time. Any help is appreciated, thanks.

ProjectEggL2.thumb.jpg.42d8d0f2118bf7a7b2de2921fcc5353d.jpg

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Posted · Problem printing column

That looks pretty small on X/Y, which means heat management is going to be a real hassle. Print slower, print cooler, put a fan in front of the machine to help cool it. If you're using skienforge, try using Multiply and printing multiple copies at once..

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Posted · Problem printing column

Are you using Marlin?

Are you belts properly tensioned?

Temperature can be lower, which might help.

100% infill will require perfect calibration. Try 90% infill so if you have a bit of over extrusion it will flow out during the infill and not during the outer edge. Most likely you have a pressure buildup which starts to cause extra extrusion around 1cm of height.

This fan shroud does wonders for small objects:

http://www.thingiverse.com/thing:10501

I printed these:

http://daid.eu/~daid/IMG_20110921 ... small.jpeg

and they look perfect. But they where at 20% infill.

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