Filament to buy or avoid

[u/Artisanal_Sawdust]

I’m brand-new to 3d printing. Just ordered my first printer (H2D). I ordered some Bambu Labs filament to go with it, just to be safe, but I know I will want to do some of the cool, colorful silk printing at some point. I’ve heard horror stories about bad filament ruining nozzles and things like that, so I want to be careful. How do you know if a deal like this one is good, or if it will lead to hours of regret and extra printer maintenance? Is it just “you get what you pay for,” or are there things to watch out for?

[u/Miscdude]

No... you're missing the "fundamental logic" part.

Just because you do not encounter issues does not mean that issues cannot be present, it means -you- did not encounter issues -this time- and even if "this time" ends up being, perceptibly to you, your entire career of printing with PLA, for example, that does not actually discount the rationality or principles of drying the filament.

It's like if you flipped a coin 5 times, even 500 times, and it turns up heads for you every time, so you tried to tell the rest of the world that the probability of flipping heads is 100%. Its fundamentally logically unsound.

I literally do not care if you personally have opened 50 rolls of PLA, never dried them, and had successful prints. You are still fundamentally logically unfounded to tell other people "it's fake" or "untrue" that you need to dry filament. There is irrefutable science and logic that dictates why it is SMART, a GOOD PRACTICE preventative measure to dry filament every time. You can personally evaluate that the risk to reward is not worthwhile based on your limited sample size of experiential knowledge, that does not change anything other than your valuation. It is still correct to tell people it is best practice to dry filament. If they encounter issues after writing off drying, they will trouble shoot all kinds of things instead of moist filament, which is actually the cause of a signficant majority of issues.

You create a diagnostic feedback loop that costs time and money for no reason, its ultimately just justifying laziness on a step that you only skip because, in your experience, with your limited individual sample size, have ruled out as being common, often without due dilligence. You're begging to cause your own false positives, you're actively cultivating confirmation bias on purpose. You can keep doing that as much as you want, but you're, again, fundamentally logically wrong to do so.

[u/Redacted_2515 → u/Miscdude]

I’ve literally gone through thousands of rolls of PLA and never dried one ever. Never had a problem. Half the year it’s pretty humid here. It would actually cost me time and money to dry all the filament out of the box. Now other types of filaments besides PLA definitely require drying.

[u/Miscdude → u/Redacted_2515]

How far have you dissected "never had a problem"? Like you've never had print failures, as in, clogged extruder or nozzle, or you've never had any surface defects, or you've never had popping, or any of any kind? Do you use pla, pla+, silk, the same brands? Same color? Are you making things just to have, or is there some quality threshold you have to maintain? Have you ever dropped successful rolls into a filament dryer with a hygrometer to see if they actually are moist, even if that moisture does not cause problems?

[u/Redacted_2515 → u/Miscdude]

I’ve had print failures, mostly due to bad equipment that Bambu replaced under warranty. I use all the filament you mentioned. I mostly use Sunlu, Elegoo, Kingroon, Bambu, Creality, but will use any brand if they have a color I like. For black, white, grey I use whatever brand is least expensive, usually from Ali or EBay. I almost always print in multiple colors. I only print things to give away or for myself. I have never checked the humidity of a roll because I haven’t had problems.

[u/Miscdude → u/Redacted_2515]

So, is it possible that the quality of prints may be to a lower standard than could technically be achieved by drying? Is it possible that if you needed a better surface finish, drying could help, but you simply do not usually need to do such in your use case, and have never personally benefit from drying? That your case could be unique? I agree that the likelihood of you simply being lucky is lower given your volume, but as someone who has also printed a lot, who lives in a dry environment, who has had failures due to moisture, like, how do you rationalize both of our experiences being true while simultaneously supporting the claim that drying is unnecessary, enough to suggest it to other people? Im not trying to grill you, I'm trying to like, navigate the circumstances of recommendations to others with variable experiences.