I would like to see an option on the printer to “Clean/purge” nozzle DURING a print. There are many times a small blob or other debris accumulates on the toolhead and besides pausing and manually trying to clean it from a heated nozzle there is no other “smart” option.
Very desirable feature.
A couple ideas come to mind.
your settings are not optimal for the filament. There should never be a blob or anything else on the print head during printing. During the start of the print the nozzle is cleaned by rubbing it on the back tab of the bed and by multiple wiping passes on the wiper. Does it look clean after that happens?
You can look at the machine start gcode and see how it works. There are sections clearly labeled for wiping. You could add that code to layer changes to auto-wipe, Though I cannot imagine why you would ever need to.
How about doing a screen capture during a print showing what you are trying to fix?
Have you tried printing Bambulab PET-CF ? There is just no avoiding the blob on the nozzle forming - yes - with Bambulab default print settings. Others are facing the same issue. Either ways, its not a question - its a feature request.
I may be wrong here but I think I have read that if you do smooth timelapse then it does a nozzel wipe after every layer, but I am not sure, you may try it until the feature gets added that you want.
Well, the filament type was not mentioned, and I do not see the feature request tag on the post
this is a great feature request… I have the same blobbing issue with PETG-CF… keeping the door open an inch or two seems to help a little, but I’d like to see an option to let us set the wipe every x layers - I think that would be a reassuring option to have. As someone said, blobbing can happen for any number of reasons, including just happenstance of plastics.
I also think using the smooth timelapse in attempt to simulate the wiping is not quite the same… it seems to just activate the prime tower, which won’t really do anything printing itself does for cleaning the tip from blobbing. I haven’t run a print to confirm this, so I could be wrong and it does indeed use the wiper along with the prime tower… I’ll give it a shot next print and observe.
…and I have confirmed, using the smooth timelapse does indeed force the hotend to swipe over the wiper after each layer, but it only does it once before proceeding to the prime tower. This should still help. And FYI, setting to smooth timelapse increased print time by about 15%
How do you set the smooth timelapse please? Thats a new one on me?
in bambu slicer under Other tab, at the bottom you will see “timelapse” option 
Hi,
I’m seeing this issue a lot with PETG.
This time I’m using Bambu PETG Basic with their filament settings.
I’ve set print speeds of 180 for infill and support, and 100 for outer/top wall, so bellow the 200mm/s recommendation from Bambu.
I see a lot of debries left in the heatbed, and some stuck in the middle of the print, this clean option would be great, to have the option to request clean after some layers printed.
Would also love to see this. IF it’s not already destroying the print you can cut the filament and have it to a run out, then it will purge and wipe, etc… again. Definitely not the desired way but it’s the only sure way I know at the moment.
I’d also like the a wipe/clean hotend option…
that can be inserted prior to start of any layer in Bambu studio
that can be done “on the fly” as a button the LCD screen
…my prints looks awesome on most models, but some square things after a certain layer, a blob is always forming and makes for a less than perfect surface on the exterior of the square
Better yet, automate this by making the print head pass near the camera after every X layers, use “AI” to check for a blob and clean, if no blog just continue.
I’m having the same issue here. Spent almost my entire day trying to calibrate my printer for PETG but even after long hours working on this it’s still knocking down my print. PETH is prone to this kind of leaking, it happens on other printers too, but given Bambu printer’s speed & a few tall models being printed, it fails a lot.
+1000 Would love this option too.
There’s plenty of times when it could be useful, just the ability to hit wipe from the app or LCD when you see the need, then the printer could finish current movements, wipe, then return.
Of course in a further build out it could be automatically detected, or even “wipe nozzle every x layers” type setting.
From what I can imagine, this could be quite a low effort feature that would be really awesome!
Hi guys!
I just wanted to request the same feature, but used the search funktion before starting a new thread… 
Some times (it just happened to me) that I see a string hanging off the nozzle. It would be great if I could just hit a “clean the nozzle” button next to the play / pause and stop button
Hope one of our heroes reads this!
Best regards from Vienna
Chris
I added this to a print job this evening. PETG and don’t want to back down on the extrusion multiplier as maximum strength is critical on these parts.
Added this in the machine g-code section in the Before layer change box.
;===== Wipe nozzle between layers ==========
G1 X60 F12000
G1 Y245
G1 Y265 F3000
M400
G1 X125 F6000
G1 X60 F6000
G1 X125 F6000
M400
I just found a simple solution: pause the print for a moment, then hit run again via the app or in Bambu Studio. The tool head does a short wipe before it continues printing!
I have found this works great for petg, you only need to coat it every once in a while. The bottle will last a very long time.
If you pause your print it will in fact trigger a wipe!
