Hello everyone,
I am quite new on 3d printing but this kind of issue is very annoing…
I want to print placeholder for my wedding, and after 47 printed items, this happen almost every time
Usually I printed 4 at times, every piece had 7cm width and sometimes when I tryed to printed only one, the print was fine.
This is the “real” item
I’m sorry if my english isn’t perfect and if there is any questions I’m here to answer to everyone!
It seems like your filament is wet or partly wet. I would recommend drying the filament and do some flow calibration to ensure there is no under extrusion.
I also have such a role, as I used to NOT dry PLA filaments. But one of my role was printing fine for the first 200g and since than the output was terrible.
Thanks, I will try this! I thought about humidity problem, but i didn’t know PLA can be "over"wet!
I let you know!
All filaments can be wet, but some types are more vulnerable to get wet. PLA typically can be stored without any humidity protection, but if PLA arrives wet from the manufacturer, it has to be dried as well.
Ok, later I’ll try! But, I have to ask you… What if after drying the filament, still print badly?
You can also do the flow calibration first to see, if it is only the flow rate.
As @Fr33lab mentioned, filament can have/develop moisture issues. For effective troubleshooting, dried filament is a prerequisite.
Another frequent cause of failures developing over time is gradual contamination of the build plate. Especially the textured plate. A good scrub with a clean brush under plenty of running water with dishwashing liquid will usually resolve this.
While most commonly a complete loss of adhesion occurs, local loss of adhesion can occur, with subsequent warping causing local overextrusion defects.
Adhesion was my first thought, but, warping effect only at the border and this kind of issue is from layer #5 or 6, so i don’t think is an adhesion issue…
I did the flow calibration, and this is the results of the second stage
I am using Overture Matte PLA, and i didn’t dryied before calibration, but this is was happened… after the 2 stage, this was the results, -20 first stage, -4 second stage.
Tomorrow I’ll try to dry the filament… Anyone knows any “fast” solution?
I also have the Cool plate, did any thinks it is maybe better?
Warping usually becomes observable at the edges. So that would be fitting. But moist filament is a bigger initial issue.
There’s not much point in calibrating (potentially) moist filament. The only really well knowable state is for freshly dried filament. So that needs to be the first step in any case.
The link is for the X/P series but the principle also works on an A-series. Just make sure the bed is empty when moving the head 
In the longer term, you’ll probably want to pick up a cheap dryer.
Unfortunately, there’s no “fast” solution. If you use higher temps, you risk filament binding and/or spool deformation.
Times in the wiki are a bit conservative, but shortening times may leave too much moisture in. In particular towards the centre of the roll.
Best practice would be to weigh and record the weight loss every 1 to 2h and keep drying until the loss is close to flatlining.
Note that it takes only a few grams of water to have an effect on rheology. Values of 2g/kg can make drying neccessary. 4g, in my experience, usually neccessitate drying.
As for cleaning the bed, it is good practice to do this every dozen prints or before changing filament types anyway. Pretty.quickly done as well.
Personally, I quite like the Cool Plate. However, due to the lower temps, prints on it are slightly more likely to experience warping and curling while the lower temp can make the use of glue neccessary.
Nowadays, I usually prefer the Smooth PEI when I need a smooth bottom.
I do not have a SuperTack plate though. Reports in the forum were a bit mixed. Both great performance but also complete failures have been reported with a bit of an early batch dependency.
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Ok thanks! Today I will dry all my filament and then I’ll try to print again. I will let you know!
