So are you saying that you don’t think it was dry, or that you tried printing with it and still had what appeared to be moisture related issues, or are you just looking for a faster way to get to no weight change?
Edit: ok, just went back and saw your 20 hr drying post. What is the humidity like where you live? it seems like if the S2 is working and venting properly it still should be pulling moisture out unless the surrounding room humidity is so high there is no where for the moisture to go.
Humidity 50%, i am in florida.
I tried the moisture test, the one with 2 triangular poles and it was a spiky mess, but then i printed a benchy and it looks normal, no issues at all.
I don’t get it… weight of the spool, after drying all night did not reduce at all, but it now prints well, benchy, volumetric flow rate up to 20mm3/s all good.
no further weight reduction just means that you have reached minimal humidity in the filament that is achievable at your current drying temperature and ambient humidity.
You probably can further reduce weight when you reduce ambient air humidity, either by putting potent desiccant (molecular sieve, maybe activated alumina?) into the dryer as @Short_Shot has proposed before or by feeding pre-dried air into your dryer as @MZip is doing with his column drying setup, he published on makerworld.
i had a cup full of 3A molecular sieve in the dryer.
Out of curiosity, what brand of filament is this?
I am starting to wonder if this is print setting related. Got any pictures?
Siraya Tech Fibreheart PPA-CF
290 nozzle temp. With 0.6mm bbambu WC nozzle it passed 20mm3/s flow rate test and i ended up with good benchy.
Are you printing from an external reel or AMS? If external at that humidity I could see it pulling in moisture as it’s sitting there, especially during a long print but a short print right after drying might be OK. Pure speculation, not experience.
I’ve printed a lot of Siraya Tech PPA-CF and I’ve found drying it at 85° for 12hr is sufficient for me. I also live in a reasonably dry environment so that factors in.
And was this fully regenerated to 400F plus for at least 2 hours?
Just an FYI. Another thread that talked about PPA-CF (you probably already saw it, but just in case). Might have some info useful to you.
Wow! You are down to 50% humidity in Florida? Where are you at? That’s almost my inside humidity.
Here in Brevard we can call 60% a ultra-dry day.
That is the inside humidity. Sometimes it drops to 43% like now.