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sckibbons
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Print Help

Post by sckibbons » Mon Jun 01, 2015 2:37 pm

Hello All,

I have printed this part twice now with the same issue. Any idea why the top of the print looks so sloppy. I don't think its a leveling issue but i could be wrong. Any feedback would be greatly appreciated.
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Yodajammies
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Re: Print Help

Post by Yodajammies » Mon Jun 01, 2015 2:42 pm

If you post your print settings it will give us a better idea of how to troubleshoot this.

Without seeing anything else, IMHO it looks like those top layers are printed a little too hot and they're causing warpage. I might increase the minimum layer print time to allow those small surfaces to cool a bit more.

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insta
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Re: Print Help

Post by insta » Mon Jun 01, 2015 3:50 pm

sckibbons wrote:Hello All,

I have printed this part twice now with the same issue. Any idea why the top of the print looks so sloppy. I don't think its a leveling issue but i could be wrong. Any feedback would be greatly appreciated.
Definitely too hot up top. Keep the same settings, just print 4 at once.
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sckibbons
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Re: Print Help

Post by sckibbons » Mon Jun 01, 2015 4:06 pm

I'm using the PLA slicer settings which can be found here:
https://drive.google.com/folderview?id= ... sp=sharing

Unfortunately i cannot access the drive from my current computer to upload the file directly. Instead of printing several parts, would it help to reduce the extrusion speed?

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ednisley
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Re: Print Help

Post by ednisley » Mon Jun 01, 2015 4:17 pm

sckibbons wrote:would it help to reduce the extrusion speed?
Probably not, because letting the hot nozzle hover over the object will still slag the PLA: its melting point is just too low.

Moving the nozzle away from the part gives it time to cool between successive layers, but, alas, lets the nozzle whack against a layer that's curling up around an edge. Adding a bit of hop during layer changes may prevent that, as will more cooling airflow.

jsc
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Re: Print Help

Post by jsc » Mon Jun 01, 2015 7:18 pm

It could be (and probably is) cooling issues as Ed suggests. One other thought is, what is your infill set to? On domed tops like that it is important to have a high enough infill to prevent it from falling in. I suggest 15 at a minimum, and 30% preferred. 3 top layers.

sckibbons
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Re: Print Help

Post by sckibbons » Tue Jun 02, 2015 3:10 am

I added a box around the part and it came out pretty good. Thanks for all your help!
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