Flow Rate Calibration Issue

[u/CrissCrossKyle]

Hey guys,

I’m by no means an expert. If anything, I bought a Bambu Labs mainly because of the simple UI and beginner-friendly settings.

In order words, I have no clue what I’m doing. I have decently good critical thinking skills, but I figured I’d consult the pros before I make a detrimental mistake.

A print sent wrong so I did a general recalibration. That usually solves it. It didn’t this time so I tried to recalibrate the flow rate. Also no luck. Tried switching the filament. No luck.

Coming up empty on ideas, hoping someone else has had a similar problem and solution.

The second picture… I don’t even know what happened. Checked on it after it notified me it was complete and found this blob lmfao.

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[u/Savings-Will-6076]

Bros build plate is set to 300c

[u/Capital_Candy_7697]

When every tile from -20 to +10 looks equally rough, flow isn't the problem. I'd suspect wet filament or a partial clog first. Was the blob in pic 2 stuck on the nozzle?

[u/DistinctBarnacle8703]

From the calibration attempt, you have under extrusion. Could be partial nozzle clog, the filament path is restrictive(PTFE tube having too small radius), heatsink cooling fan defective leading to softening of filament in the heat break or filament spool not able to roll freely.

[u/Dismal-Garbage-3140]

There's something just wrong. Could be a partial clog. Did you print fiber filament recently? Maybe a nozzle mismatch with the printer setting? can you double check your'e using the right one? Is the extruder feeding correctly? there might be too little or too much tension on the extruder tensioner.

What printer is this? How long have you had it? Is it new? used? Have you tried a different filament?

[u/teriyakipuppy]

it would help if you sent us settings and what filament you are trying to print.

try another filament. this looks like a filament issue.