Ok I am looking at the door piece in the slicer. If you are using 25% infill or higher you should be fine as long as your slicer is not drawing the first top infill layer parallel to the last gyroid layer. Judging by the scarring on your photo Is it possible you are not extruding, not because of a clog but because there is too much drag in the ptfe routing. The stock p1p tubing setup should be fine but has anything changed there? Disconnect the ptfe tube from the toolhead and do a heated detraction. Once the filament is out of the hotend pull on it with your hand and see if there is any resistance or drag. I had severe drag one time and was getting the same scarring on the print as you. I have never had this happen on my p1p though, only the custom built ratrig. However, drag usually presents itself even on the first layer.
I tried to do a heated detraction, and no drag is present. I am also using the AMS, which does not seem to have problems pushing the filament through. Iāve also tried to feed the filament all the way through from the AMS to the hotend by hand, no unusual resistance.
It is the larger, thicker pieces Iām having trouble with. Namely the Top cover and the Door pieces.
I have not yet tried the side panels, which are thinner but same size roughly, since Iāve basically run out of filament by now.
Iāve looked through the sliced file multiple times, layer by layer, and found no inconsistencies. Iāve even tried printing the exact same G-code with regular PETG, which worked flawlessly.
I did try to look at it while it printed as mentioned before, and found it not extruding enough material. Also, I noticed on a print before, that it seemed like it printed the sparse infill in midair, which could be intended to avoid dragging on the infill.
Or, it could be because of Infill Combination, which tries to print at 0.4mm layer height instead of 0.2mm, and it simply canāt extrude that much material. That is my hypothesis.
However, I did also try to print it with Infill Combination disabled, and it resulted in similar outcome.
I did try to print at 25% infill, which gave same results. I have not tried to go below that, but then again, if I am unable to print with even 25% infill, it seems to me there are some concerns with the filament as a whole.
I am currently finishing the print with regular PETG and ASA, both are abolutely perfectly printed, no extrusion limitations, no clogs, no surface abnormalities.
Only issues Iāve had, is with ASA warping, but that has been fixed to an extent after assembling more of the enclosure.
Hmm. When you visit the authors page he literally says this enclosure is not printable as is and has failed to print in every material except PLA. I looked at the door and found that it is not actually flat. It shows it plainly in the slicer. This could be the problem maybe? No doubt you are printing the door with the hinge upwards as would make sense. This means this weird anomaly with the top surface could be the issue but once sliced it might be very difficult to see. You can only see the irregularity when you place the object and click the ālay on faceā button which shows the irregularity.
As you can see the other side looks perfectly normal and flat. I believe you have improperly made object. Feel free to correct me on this anyone.
That does seem to be the case, however it would not actually make a difference in the print, since it still gets printed as a single layer, due to the irregularities being less than a layerās height (if Iām not mistaken). I believe why youāre seeing that weird texture/pathing of the toolhead, is because of the model not being completely square because of the hinge, and you using Concentric pattern for the top layer.
If switching to Monotonic Line (which Iām using), it looks normal after slicing:
Everything still looks normal the next layer down.
Also, the exact file I was having trouble with (though I tried a few), I believe was the DoorRightBottom, which does seem to be completely flat:
The one single print that finished without flaying the top layer, just split in half on me. I could literally open it like a book.
On one side, it looks correctly printed, and everything seems solid:
But then, something happened in the nozzle. Perhaps a clog:
The infill on this side is completely loose, no structure at all. Itās also more or less completely straight, which is weird considering it should be Gyroidā¦
And here are the sides next to one another:
can you post a link to the model?
Fully Printable P1P Enclosure by Taer.Holmes
And the specific models Iāve been having problem with, are the P1P - Door2 and P1P Lid - Top Cover.
Iāve successfully printed the models in PLA, PETG and later ASA, without any issues.
Thanks.
I just noticed something in my slicer. If you choose Gyroid and ALSO infill combination it does not (in my view at least) code the infill properly. Gyroid is supposed to be completely line in top of line and slowly twist around back and forth. Bascially there should be no gaps between layer lines. If you choose infill combination it creates huge gaps between the layers. I believe this is a bug and probably has caused my prints to fail in the past. Donāt know if this is your issue but its definitely AN ISSUE. The top pic is with infill combination and is not correct. The bottom is without infill combination turned on and looks correct.
That indeed doesnāt look rightā¦
I have sliced this in many other pattern types and it actually results in the same outcome for them all. Grid is the only one that doesnāt have this much of a pronounced affect.
When you think about it, it makes sense that the infill will look like that. The nozzle wonāt lower down to the previous laid infill as it would likely collide with the walls. So itās possibly 3 or 4 layers (0.6 - 0.8mm for a standard 0.2 layer height) above the height when it extrudes, which will cause the filament to drop down like spaghetti over the previous infill.
The issue is that the gyroid shape is not regenerated to fit the layer height. Assume the original layer height is 0.2mm and the combined infill height is 0.4mm, what the slicer seems to do is print every other layer with double the material. But for gyroid that means lines end up in mid-air. What it would have to do is regenerate the gyroid shape for 0.4mm.
Sounds about right. IC is all about combining several layers into one. So the individual layer heights on the infill would be thicker than the walls but the shape and design and bonding points should not change. the lines should just look bigger, not like spaghetti. Iām not a slicing expert per say but thatās how it should work in my own mind. And if it is in fact printing the lines the way it looks then that would explain A LOT of the infill issues I have had over the past few months. This material does not do well when not printing directly over existing layer lines.
Unfortunately, this isnāt the issue, since I have already tried with different infill patterns, and with and without infill combination.
I have been in contact with BBL Support, but I was only able to receive a replacement, but the issue with the replacement filament is still present.
I have ONLY experienced this issue with PETG-CF from Bambu Lab, and no other filament shows similar issues.
What I did try, was to reduce the extrusion multiplier, currently sitting at 0.92 to 0.94 depending on nozzle size, and this seemed to somewhat help, but not to the extend where the results have been acceptable. The issue has been the exact same on 0.4, 0.6 and 0.8 nozzles.
I havenāt honestly gone through the whole thread, but Iād try simply increasing the temperature. PETG-CF from other brands sticks very badly to previous layers (in other words, it prefers to stick to the nozzle and just tears from the print on outer perimeters of overhangs and such). Bambu PETG-CF is better, but it still likes to stick to the nozzle very much 
It is also possible you have a mechanical issue with backlash or similiar, and once that messes something up it just continues to mess everything. Print a 50x50x50mm cube with 15% rectilinear infill, stop it after few layers of infill and inspect it - if you see the infill that looks like it has two walls, then you have backlash somewhere. My backlash was pretty severe yet most prints looked just fine when finished, but it caused problems like this, weird artifacts on surfaces, collisions or scraping over printed lines etcā¦
Hey I seem to be having the same issue with some PETG. Did you ever solve this?
Hey, having some problem with regular PETG, happens on 2-3 top layer for large surface pritns only. I presume no solution has been found so far ?
Aloha from Italy, i have read everything i have found on the web about this problem, and i want to post my experience with a question, because iām not having luck finding a solution. I have always printed successfully this model, but yesterday the top surface got ripped (i didnāt change the settings i used before). Now i have tried to avoid slicing the top layers with adaptive height (i used to do so to improve the smoothness). In the picture, you can see on the left a part as it used to come out of the printer, in the middle a part without adaptive layer height, and on the right a part showing the problem iām having now with adaptive layers height. What comes to your mind? Any suggestion? Thanks to all! 
UPDATE: I just noticed that adaptive layer height, made the slicing a bit messy, like that in some layer it was printing only an item and in the next another one. I tried to merge all models and give them an uniform adaptive height. Iāll keep you updated
UPDATE nĀ°2: print still failed in the same way