SoliForum - 3D Printing Community — Print Curling - Not print surface issue

Re: Print Curling - Not print surface issue

null@example.com (mm2tts) — Sun, 18 Aug 2013 03:16:17 +0000

We have an enclosure, but also heat the enclosure with a "personal" small space heater (got it from Amazon). This heats the interior to 50C according to the temp reading from the extruder's thermistor before the extruder has been heated. It helps keep the ABS stable. We also have a fan ducted around the nozzel.

Re: Print Curling - Not print surface issue

null@example.com (ronsii) — Sun, 18 Aug 2013 01:36:21 +0000

Basically your print head is heating up the layers below the current layer and allowing the top to shrink and the lower layers then let it pull up...short of putting a cooling fan on there you might try if you haven't already set the print temp as low as you can and still print good or speed up the print head so it isn't remelting previous layers as much.

Re: Print Curling - Not print surface issue

null@example.com (2n2r5) — Sat, 17 Aug 2013 13:21:23 +0000

This is definitely as issue that can be fix with a cooling fan. I don't know of any fan mods that will work with the E3D unless you have lawsy's carriage replacements.

http://www.soliforum.com/post/32712/#p32712

Re: Print Curling - Not print surface issue

null@example.com (Gomisan) — Sat, 17 Aug 2013 10:41:05 +0000

Exact same thing is happening to me, its enough to catch the nozzle and knock a whole print off. My enclosure is keeping the environment nice and stable, a small thermometer tells me my air temp is about 41C once its been running a while.

I 'think' a nozzle cooling fan is the answer here, but I havent printed a mount yet so I cant test that.

If you try it, let me know how you go.

Re: Print Curling - Not print surface issue

null@example.com (Krythis) — Wed, 17 Jul 2013 00:45:51 +0000

Is this a case where a fan would help or would that only make it worse?

Print Curling - Not print surface issue

null@example.com (Krythis) — Tue, 16 Jul 2013 23:15:00 +0000

I ran into an issue when trying to print an object with a hole through it. While building up the print, prior to bridging, the layers will begin to curl up. Any thoughts on why this would occur?

Acrylic enclosure
E3D hotend @ 200º and 225º with no apparent change
qu-bd bed heated to 90º
No bottom warpage
Octave red ABS
.35mm layer height with speeds apx 15-20% higher than default

Also noticing some waviness to the layers when I watch closely. It doesn't lift nearly as much as the layers in question, but you can see some gaps in the image that were caused by this. apx 50% humidity in room with AC. I may need to pick up a tote to start storing my filament in.