Hi,
when I first ordered the X1C (as my first FDM printer), pretty much all Bamub Filamant was out of stock, so I ordered random other brands from Amazon. Later on when the Bambu Filament came back in stock, I ordered some of that. Generally I think it’s nice filament, colors are better than the cheaper filament I had before but there is one thing which seems off. Whenever I print something round where I don’t want to have a seam somewhere, I tend to randomize the seam location so it’s less visible. This worked nicely with the filaments I used before, one would need to look very closely to see the small dots on the print where the layer seam is. But with the Bambu filament, this isn’t the case. Every layers seam produces a rather big blob so the print has actual spikes. I noticed this with the PLA Basic as well as with the PLA Matte.
I used the standard profiles, that is Generic PLA for the random PLA I bought earlier, and Bambu PLA Basic/Matte for the Bambu PLA. Is anyone else noticing this or is something off with my setup?
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Generally on that type of part using aligned for the seam works best.
When you suddenly see blobs like that and there is no obvious reason, it is often moisture in the filament. Even new filament coming out of the vacuum sealed manufacturer’s bag is often “wet”.
Hmm. Ok. Thanks @julie777 . Will try to dry the filament then.
Meanwhile I’ve been trying to reproduce this with smaller samples and funnily it doesn’t seem to happen there. Also, looking closer at the previous prints, it doesn’t happen on every layer, just some of them. My current suspicion is that this happens when the new seam location is further away from the last point of the previous layer, so the movement is taking longer, giving the filament time to drip out.
Have you tried setting the seam to aligned just to see what happens?
I didn’t for this particular model, but I printed similar models with aligned seam and it always created a rather visible seam. That’s why I started to use randomized seam location in the first place.
Yep! And as you found, a randomized seam location also creates a visible seam (randomly all over the place).
If using Orca Slicer, you can adjust the size of the seam gap here:
Well, I’ve printed it with a different filament (Anycubic) and the randomized seam is barely visible (pictures here). Certainly muuuch better than an aligned seam.
Thanks for the tip with Orca slicer. I’ve been trying it for a while but it crashed rather often for me. So far I didn’t find the feature that would make me stick to it over Bambu Studio, but perhaps that’s the one now 
Finally I found the time to dry the filament and retry a print. This actually did fix it. With the freshly dried Bambu PLA, the randomly positioned seam points aren’t visible at all. Thank you @julie777
Been having the same sort of issue, but with ASA, and PA6. Drying them for days still doesn’t do anything, changing seam gaps doesn’t change it. PA hasn’t changed it. Still just have these little divots where the seam is at. Super frustrating when I’m needing a beautiful finish part and just can’t get one. Any ideas?
