Kaechele

Wow, this is interesting information, thank you. I'm afraid a 1.75 conversion is out of the question for us, I won't modify our brand new and only S5 just to print this stuff. Your application is certainly special, and I'm impressed by this PAHT's performance under those circumstances. It is a great material, and when it does, it prints absolutely beautifully as well, I admit that. But I also have some thoughts I better not express here about them putting the 2.85 version to the market when it explodes in your face all the time. It's not like nobody could have noticed it before. The answer they gave you is... disappointing, to say the least, and I find it hard to swallow. In the face of this, what I will do is publicly advise anybody to not buy this material unless they really, really see no alternative and are willing to cope with the most dastardly stiff and brittle (to the point that it acts like it was literally made out of glass) filament they ever fed any printer, leading to a lot of failed prints and even more unnerving cleaning of the machine. We mostly needed several attempts (read: insert, try to feed, have it break, open bowden, sometimes even open the feeder too, clean out fragments, close, pray, repeat) to even have it reach the print head. Now we have two spools sitting on the shelf, and I don't know what to do with them, because I really want to spare myself the hassle of dealing with any more of this; it's a waste of time and money. Another thing we noticed (at the times we got it to print, that is) is some very heavy shrinkage in z-direction that makes it kind of hard to predict the dimensional outcome. Do you experience the same? How do you cope with that? You have not by any chance ever tried the LUVOCOM 3F PAHT CF 9742 BK? It looks very similar if not superior on paper, and it even has the "Optimized for Material Station" label, so I would guess it should be a bit more tame...

Did you have any success with respooling it or did you get it to print reliably in any other way? We are experiencing the very same problems with this PAHT CF15. Regarding comparisons to other filaments, I understand PA-based filaments are very hydroscopic (far more so than PLA), but everybody and their uncle kept saying that about PVA as well, and drying it again and again and keeping it in the Material Station only increased its brittleness for us. In the end the successful solution was to keep our PVA in the open for several days, and by absorbing just a bit of moisture from the air, it became smooth as silk and printable again. I'll just leave that as a side note here. Now to get back to this stuff here, BASF's TDS for PAHT CF15 states: Looking at it that way, it should not be possible to over-dry this in any way, it's the dryer the better full stop. Your 200 F (93°C) may have been a bit too hot, for how long did you condition it this way? Unfortunately, I have not yet had the possibility to try these recommendations, but I'm very interested in your experiences.

The link above leads to nowhere, unfortunately. Product page: https://www.clariant.com/en/Solutions/Products/2018/09/29/02/41/PA666_GF20_FR_Exolit_3DPrinterFilament

The link above leads to nowhere, unfortunately. Product page: https://www.clariant.com/en/Solutions/Products/2018/05/19/17/17/Polyethylene-Terephthalate-Glycol-PETG