Old Polymaker PC Plus?

Help with printing with specific plastic filaments.
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mhristau
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Old Polymaker PC Plus?

Post by mhristau » Sat Jul 06, 2019 12:08 pm

For weeks my first roll of Polymaker PC Plus, 2.85 worked beautifully.
It's kept in air tight container with ample indicator desiccant that remains yellow... Feeds through teflon tube from container to enclosure... from extruder it is smooth (no bubbles).
Second roll same setup. Moved from packaging to desiccant box and stored there about 48hrs. Nothing but bubbly extrusion now.

Ordered roll of newer Polymer PolyLite PC Filament (Formerly PC-Plus)

Possible that second roll is just too old to be usable??

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mwester
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Joined: Sun Nov 26, 2017 8:02 pm

Re: Old Polymaker PC Plus?

Post by mwester » Sat Jul 06, 2019 12:18 pm

Not sure if it's age, or perhaps compromised factory packaging...

I had a similar problem with some Lulzbot ABS that I bought on eBay, in supposedly-sealed factory packaging. It sure looked sealed, but it bubbled and spat when I tried to print it.

Desiccant alone won't fix it -- it seems to me that stuff can keep something dry, but it can't seem to dry something that's taken in the moisture already. For me, a day in a modified food dehydrator cured the ABS roll just fine. I've had less positive results with some of the PLA - it dries, that's for sure, but it also seems to get more and more brittle each time it gets dried (good thing it's biodegradable, more or less, and cheap -- it makes it easier to toss a roll and replace it when it gets too awful to use...)

mhristau
Posts: 49
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Re: Old Polymaker PC Plus?

Post by mhristau » Sat Jul 06, 2019 1:06 pm

mwester wrote:
Sat Jul 06, 2019 12:18 pm
Desiccant alone won't fix it -- it seems to me that stuff can keep something dry, but it can't seem to dry something that's taken in the moisture already.
Thanks—Didn’t know that! Not crazy after all (yet).

mhristau
Posts: 49
Joined: Sun Jun 24, 2018 3:18 pm
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Re: Old Polymaker PC Plus?

Post by mhristau » Wed Jul 10, 2019 10:23 am

Ordered roll of "Polymaker PolyLite PC" filament and received box labeled "Polymaker PolyLite PC Plus" (Old inventory again?)

Returned to my second roll of same unprintable filament, removed couple yards and baked at 170°F for 24 hours. Tried again. Same bubbly extrusion through a brand new SE tool head!

I printed over 100 small parts with first roll: No Problem.

Just need to print 6 more identical parts to complete the project.

Doesn't seem to be a way to contact Polymaker directly... Any thoughts?

mhristau
Posts: 49
Joined: Sun Jun 24, 2018 3:18 pm
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Re: Old Polymaker PC Plus?

Post by mhristau » Sun Jul 14, 2019 10:36 am

If I had not had such good prints with 1st roll of this filament...

Placed 2nd roll in dehydrator for 48 hrs. and still bubbles? This is through Mini2 with new Aerostruder .5mm noz:
bubblesPC.jpg

mhristau
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Re: Old Polymaker PC Plus?

Post by mhristau » Wed Jul 31, 2019 9:37 pm

Baked PC for 5 days and finally was moisture-free.
To keep moisture-free, made a retainer for teflon tube feeding from filament dry box to extruder.
Mini2-TeflonTubeRetainer.jpg
files here if of interest:
https://www.dropbox.com/sh/asnvcu26r9ar ... UZ_0a?dl=0

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