Start of skirt curling Hi, This is my first post, I've looked for similar questions and can't find anything specifically addressing this issue, but if I missed something and this is an obvious question, apologies. I've just completed my build of the hephestos Prusa i3 and I'm now in the calibration and fettling phase, which I'm quite enjoying. I have some issue with adhesion of the first layer, which I'm going looking at, but there seems to be plenty of info online about this. However one issue I'm getting is that the very first piece of extruded material, maybe first 10-20mm curls up a lot, almost vertical. this then catches on the print head on the following pass, and then dislodges the whole first layer. I've been working around this by printing a large skirt, say 50mm out, this gives me time to get a pair of scissors in and snip off the curled up bit. The print then continues successfully (well at least until the first layer warps, pops off and collides with the head, but that's the 'standard' adhesion problem I think). Any one any idea why this very marked curling at the very start of extrusion? Thanks. https://reprap.org/forum/read.php?1,427933,427933#msg-427933 Sat, 12 Sep 2026 22:31:21 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,427933,428805#msg-428805 Re: Start of skirt curling https://reprap.org/forum/read.php?1,427933,428805#msg-428805
There is a good chance it is related to the print bed temperature.
If you are working with ABS, the ideal print bed temperature is around 100C.
As for PLA i prefer around 55C.
Both of them is printing without a cooling fan.

If you are using a cool fan,
ABS: 110C
PLA: 65C]]> botfeeder General Thu, 06 Nov 2014 12:41:48 -0500 https://reprap.org/forum/read.php?1,427933,428340#msg-428340 Re: Start of skirt curling https://reprap.org/forum/read.php?1,427933,428340#msg-428340
Quote
Sijomon
So, after covering my bed with blue tape and RE levelling, the adhesion issue is sorted, and so is the initial curling problem. One happy printer here now.

Yes! That's good to hear :)]]> Ohmarinus General Wed, 05 Nov 2014 06:25:42 -0500 https://reprap.org/forum/read.php?1,427933,428201#msg-428201 Re: Start of skirt curling https://reprap.org/forum/read.php?1,427933,428201#msg-428201 Sijomon General Tue, 04 Nov 2014 19:55:26 -0500 https://reprap.org/forum/read.php?1,427933,428015#msg-428015 Re: Start of skirt curling https://reprap.org/forum/read.php?1,427933,428015#msg-428015
But, still, fixing the adhesion will fix the skirt. I had the same problem with both ABS and PLA and both of the issues on two different printers had to do with incorrect bed leveling, print temp, heated bed temp and the kapton not being clean enough.]]> Ohmarinus General Tue, 04 Nov 2014 10:27:00 -0500 https://reprap.org/forum/read.php?1,427933,428005#msg-428005 Re: Start of skirt curling https://reprap.org/forum/read.php?1,427933,428005#msg-428005
I guess my questions boils down to: if I sort the overall adhesion issue is that likely to fix the curled up start issue aswell, or is the curling start a separate problem?]]> Sijomon General Tue, 04 Nov 2014 09:58:39 -0500 https://reprap.org/forum/read.php?1,427933,427943#msg-427943 Re: Start of skirt curling https://reprap.org/forum/read.php?1,427933,427943#msg-427943
I think there the main problem is the adhesion. This can be caused by print bed temperature and initial low adhesive qualities of the surface. Distance from nozzle to print bed also needs to be optimal for good adhesion.

Solving the initial problem will also make it so that you don't have to counter the effects of the issue with a huge skirt.]]> Ohmarinus General Tue, 04 Nov 2014 06:58:56 -0500 https://reprap.org/forum/read.php?1,427933,427933#msg-427933 Start of skirt curling https://reprap.org/forum/read.php?1,427933,427933#msg-427933
This is my first post, I've looked for similar questions and can't find anything specifically addressing this issue, but if I missed something and this is an obvious question, apologies.

I've just completed my build of the hephestos Prusa i3 and I'm now in the calibration and fettling phase, which I'm quite enjoying.

I have some issue with adhesion of the first layer, which I'm going looking at, but there seems to be plenty of info online about this. However one issue I'm getting is that the very first piece of extruded material, maybe first 10-20mm curls up a lot, almost vertical. this then catches on the print head on the following pass, and then dislodges the whole first layer.

I've been working around this by printing a large skirt, say 50mm out, this gives me time to get a pair of scissors in and snip off the curled up bit. The print then continues successfully (well at least until the first layer warps, pops off and collides with the head, but that's the 'standard' adhesion problem I think).

Any one any idea why this very marked curling at the very start of extrusion?

Thanks.]]> Sijomon General Tue, 04 Nov 2014 06:27:48 -0500