Hi everyone,
I hope I’ve chosen the right category.
Anyway, my Snapmaker U1 is suddenly having issues with a part that I’ve printed many times before.
It seems I can only upload one image, so I’m uploading the image showing the error directly, even though a comparison with a flawless part
would certainly be helpful.
I hope someone can tell me where the problem lies, because I don’t know what to do now.
Thanks a lot!
Check you have wall ordering inside to outside rather than outside to inside. That will help with adhesion.
Success before does not guarantee success later. Different room temperature, different batch of filament…
You said it printed fine before so something has changed. Are you printing the same file off the printer or resliced it & sent it to the printer?
Appears to me that you may be under extruding a bit & possibly to much cooling. I’m thinking that the filament is cooling to fast and shrinking. Have you tuned the filament your using or using a generic profile.
I’m guessing they are right about outside/inside. That would explain why the outside wall has nothing to still to. Looking forward to the answer.
What version of Snapmaker Orca are you using? When I updated to 2.3.3 and 2.3.4 prints came out similar to yours, Reverted back to 2.3.1 and prints perfectly again.
I emailed Snapmaker about it and they confirmed the update path optimisations has caused the issue and will address it future releases. Please contract them about your issue so hopefully they can speed up the fix if more people bring it to their attention.
!
I’m surprised you ever had success printing that. The inner cone shape’s walls look too thin to me, there needs to be more for the next line to bond to, even with inside-to-outside. Also, the nozzle temperature could do with being a bit higher (to increase the adhesion), and it would definitely help to make the layers thinner.
It’s all very well having an unsupported overhang up to 60º (this looks like 45º), but that only really works when the overhang is on a convex surface. When the line gets drawn, there is tension in the filament as it leaves the nozzle (not fully molten, otherwise it would just run everywhere). The tension tends to straighten out any curves or angles unless there is something to stop that happening – such as the inside tracks on a convex surface, or pure adhesion to the adjacent line or the layer below (or the bed).
As for adhesion, I wouldn’t really want to see that amount of definition in the outside of the cone, it looks like the lines are not well adhered and loose. Temperature and/or flow rate is a bit low.
Frankly, this print has not been designed and/or sliced for success.
That’s not similar – that’s either stringing or a slicer error (and what you say indicates a slicer error). The OP has the correct paths breaking away, and he implies he’s using the same print file so slicer updates are irrelevant.
If you read the original post, they say they printed that part many times fine before. Same with my print, it’s been printing no issues. But it’s suddenly printing bad, what’s changed? The slicer, as soon as I revert back to 2.3.1 it print perfectly. Something with 2.3.3+ is causing it to not retract or something and causing that really bad stringing.
Doesn’t hurt to try 2.3.1 and see if the issue still persist. At least it will eliminate the slicer.
Yes. When I print a part many times, I just print it. No re-slicing involved, therefore version of slicer irrelevant. Are you re-slicing every time???
no I don’t always reslice, but sometime I add some other parts onto the plate and noticed the same part printed before printed horribly with the new version of snorca
I use Linux so I’m using appimages, I always have at least 1 old version on my desktop or sometimes 2 for that very reason.
Arguments about whether the slicer is doing something to cause this is a side-issue when the design is fragile in the first place. Yes, fix the slicer, but also fix the model. Look up a few guides about design for printability.
This construction is quite strange and not easy to print. It looks like there are only two print lines side by side. How thick is the cone? Please take a screenshot of the model.
We can only offer general advice here and provide meaningful tips once we know the slicing parameters used for the model. Otherwise, we can’t make any progress. Statements like “everything worked before…” don’t help us here.
As an example, this model is very unstable and not particularly easy to print. You have to experiment with the parameters.
That was the solution, thank you very much!
And of course to everyone else who shared their tips and suggestions!
