I attached a very short vid of what this X1C does every time it starts the second layer. Bambu X1 pulling filament into print - Album on Imgur This is when it pause after first layer inspection. It purges a tiny bit of filament and wipes then move to start second layer. It doesn’t turn on part cooling fan, or shake to harden that piece so it drops off. How can I insert the gcode so part fan will come on briefly and then shake and wipe? What do you think, would this be the solution?
Again, this happens almost every time and causes some defects with first layer.
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I find this to be pretty frustrating as well and hope that a fix comes via firmware or Bambu Studio update.
I think (unless I just dreamt this up) that I submitted a feature request to be able to issue a command to wipe the toolhead mid print specifically for this.
Worth mentioning, I really only see this with PETG and certain brands of PLA. Drying the filament could help, but i’d really like to see a solution like I mentioned above. A Gcode solution as you mentioned would be nice as a work around as well.
I have exactly the same issue and it happens with pretty much every PETG print, and with various brands of filament. A solution is needed please! I’d be quite happy if it simply didn’t do the the purge on the 2nd layer.
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Welcome to the forum!
I have resolved this issue two ways. I ended up just turning off the first layer inspection. That way it doesn’t pause after first layer, and just continues to the second layer. I’ve never needed this feature, so I’m glad they have a way to turn it off. This is in the “print settings” just FYI. Second way, I have all but eliminated filament stragglers from entering the build plate is, I printed the D3vil Wipe wire brush attachment, to replace the stock wiper. It works really well, and is a perfect fit in place of the stock setup. You just have to follow the measurements precisely when making the wire brush portion of it.
Hope this helps someone, like it has helped me.
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Dear Bird,
I can’t find where to switch off the first layer scan except commenting it in the start gcode.
Can you tell me more specific where to find this in the print settings?
Thank you in advance!
Stephan
Dear Bird,
I can’t find where to switch off the first layer scan except commenting it in the start gcode.
Can you tell me more specific where to find this in the print settings?
Thank you in advance!
Stephan
In Bambu Studio, under the “device” tab , in the “print options”, there is a setting “first layer inspection” to uncheck. Or in Bambu app, the 3 dashes in upper right, under “print options”.
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Im having the same issue with PETG, is disabling the first layer test still the only option?
I’m also having this issue. I have never noticed it happening with any other purges into the chute, only after the first-layer inspection, so I’m wondering if the purge g-code is different for this one (it seems to go to the wiper too early).
Does anyone know if the g-code for that part of the program is accessible in Bambu Studio, or sent from the software to the machine (vs. being pre-loaded in the machine firmware)?
Wanted to check here before trying a support ticket, but it looks like this could be a firmware fix to me, since other purges are working fine.
Hello, The reason the string of purge filament gets pulled into the print after first layer inspection, is because the part fan does NOT come on for that brief time it is purging, before it gets started on layer 2. All major purges over the purge chute normally get 100% part fan on, to solidify the purge, allowing it to drop into the chute.
To answer your question, yes, you could modify the gcode to turn on the part fan and possibly help that second layer inspection purge, not come into the print. I print primarily with petg and found the best solution was to just turn off first layer inspection. It is unnecessary to have, specially if you know how to get your first layers to stick and be flawless. No need for the first layer inspection. Another option that people (myself included) have done is to print this purge wipe Printables which has been awesome at stopping any filament from the purge, being pulled into the print. Hope this helps