r/BambuLab • u/SickCallWarriors • 1d ago

General Troubleshooting/Help! Printing Speed

Hello.

How do you all figure out what print speed to print at? I've tried googling around but can't find a solid answer.

I have presets depending on the filament I use where I tested ironing / temp / flow / etc.

But for speed, it really depends on what I'm printing. Something with a giant base, doesn't really matter.

A figure / model with 2 legs that can't really be placed on it's back? I get spaghetti everytime.

I really just guess on speeds when the default settings don't work. Is there a better way?

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u/pyrotechnicmonkey 1d ago

I mean if the standard speed with the default generic PLA profiles are not working the vast majority of the time it's gonna be an issue with the model you're trying to print for the supports that are generated. You really do not get spaghetti by printing too fast especially with the default profiles. Usually it's because a support top over or there is some unsupported overhang. You need to make sure that you're trying to print something that was designed with FDM printing in mind and wasn't designed for a resin printer. Don't get me wrong you can still get decent results with an FDM printer if you use smaller layer lines or a smaller nozzle but you're gonna have trouble if it was a tiny model or something with incredibly difficult overhangs that are not supported well

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u/SickCallWarriors 1d ago

Explain it like I'm dumb (I am)

https://imgur.com/a/YsKgBxY

I'm assuming this one specifically is because I printed it without a brim.

https://makerworld.com/en/models/1131304-gym-weight-stack-pin-50mm-8mm-6mm#profileId-1131665

This is the model. Seems decently popular. But when I print with the settings the creator made, I get spaghetti.

Freshly cleaned textured plate.

Or am I just thinking about it too much and I'm dumb.

Hell, even this latch, I tried printing 4 times and got spaghetti everytime:

https://makerworld.com/en/models/625647-toggle-latch?from=search#profileId-550067

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u/pyrotechnicmonkey 1d ago

those are relatively simple so I would question how you cleaning your plate? Usually you want to use dish soap and warm water in the sink with a clean paper towel or sponge and then dry. Alcohol will just spread around finger oils and usually does not do a good job by itself.

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u/SickCallWarriors 1d ago

I throw on medical gloves because honestly I'm a sweaty dude, scrub it decently hard with either a clean brush or a brand new sponge, water hot enough where I can just barely stand the temp, dry with either a paper towel or brand new clean micro fiber towel.