… unless maybe it’s a lousy filament dryer, in which case maybe it still isn’t dry even if it can’t dry it out any more. I happen to suspect this may be true, to one degree or another, for many filament dryers out there. They may be doing only just a partial job of it. You might get some improvement, but maybe not as much as you could get with a gold standard. For instance, the sovol is pretty much sealed up, so it might bake off some moisture, but then that moisture can’t go anywhere, and the process halts prematurely and it won’t matter how much longer you dry it for in there. For a lot of the others, the drying temps are low–a lot lower than what the manufacturers recommend for drying their filaments. I’ve heard it said that you just need to dry it longer, but how do we really know that’s true? Even if it improves, how do we know it’s not only partial?
The only way to know would be to see if you could dry it even further using a gold standard. But, of course, nobody does that. Arguably, the reviewers should, but none of them seem to have access to gold standards. I haven’t seen a single review where this is done. Not one. Furthermore, if you had a gold standard, you’d probably be using that in the first place.
Anyhow, if these lesser dryers were as good as the gold standards, then they’d be the gold standards. They’re not. I think that alone probably tells the tale: pretty much all of them are half-measures.