Does anyone have any idea why my first and last layer comes out like this, just looking for suggestions. I did a flow calibration and set it to the best sample, i have been doing this for about six months, I have it set at bambu lab basic setting. How do I get rid of these pinholes.
Hi,
Were the prints successful for 6 months, and now you have a problem, or is it persistent?
If persistent, share more details on the print settings.
If new, it can be hardware wear, maintenance needs, software, firmware, etc., or if something changed (such as new filament spools, etc.)
I know you´re asking for suggestions, but knowing these details upfront would be more efficient.
1 Like
I started noticing them about a month or so ago, its just along near the walls. I just use the bambu basic settings I haven’t got into much more of the settings. im using bambu basic filament and have experimented with other filaments. I have been keeping the printer maintained and have used different hot ends to help, but didn’t help much. I think it is a flow issue but have already run a flow calibration test. these are mostly small prints like coasters,multi color that I notice it. maybe an .02 nozzle would be better. They almost look like stitch lines along the wall of the print.
Can you see the holes already in the slicer? They do look like artifacts linked to line width limits which shows in the slicer when zooming in.
You could try using the Arachne wall generator in combination with a 999 wall count (and of course only one wall on first/top layer unchecked). Depending on the part, you may need to use modifiers to limit the changes to the bottom/top layers.
My 2 cents here - sometimes it’s the filament brand / type as well. (might need drying from moisture etc)
I can run one color or brand and the prints are perfect, and throw on some other brand and get some silly gaps like on the white part (i’m guessing that is what you are talking about the little holes there) for no reason same settings everything.
As stated above, whip up a quick test square and see. Then without changing anything you can eliminate the filament by reprinting said test square same settings. If it does the same thing in the same corners it’s then more machine/setting problem than string problem you know? It will reduce a lot of guessing by removing variables. [ the purple looks perfect? only the white yellow? so not all colors with same issue…hmm]
I’ll agree with above there seems to be a little something off, but not much the print looks very good!
Thanks for clearing out.
I cannot be precise about the cause.
- Details at a small scale are often challenging to achieve with a larger nozzle; as @EnoTheThracian mentioned, check in the slicer preview if the holes are present.
Can you share the preview?
-
Something changed if you could print this model perfectly in the past. Filament, as @Unique_Letterhead mentioned, is a typical cause. But there are many others.
-
On the other hand, if you start to print details at a smaller scale and find issues, even if the flow is calibrated and well done, there are some settings precisely for cases such as yours that may help. I.e., you can edit individual settings for the first and top layer, such as:
a) flow ratio available in the quality tab - advanced menu;
b) Ironing for the top layer;
c) Number of walls;
d) top surface and bottom surface pattern;
e) line width;
f) printing speed;
g) many other settings using modifiers;
This is, however, a trial-and-error procedure.
In your case, assuming it’s the first layer in the image, try to reduce the first layer line width (e.g. 0.42 ) and recheck the preview. You can go lower, but there are limits. If not enough, the smaller nozzle is indeed a better solution.
1 Like
Try increasing flow rate slightly. Ive seen this before, and flow rate solves it.
For example, .98 to 1.0