PLA reacting to heat much more quickly.. !

The Hat

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I got my last batch of filament from Creality a couple of months ago, and I’ve noticed that they are not as good a quality as they use to be..

I’ve experience very little difference in any of the PLA filament I’ve got over the years from many suppliers, but this batch seem to react to heat rather quickly, and the colours are slightly lighter too.

I placed a printed sign in my car window and it warped within a day, the previous sign took several months to react, just taught I’d mentioned it, but a quick blast from my heat gun and it flattened out again..
P.S. Had I used this stuff on my Standard Lamp it most likely would have looked very funny.. You can put your arms down now..! :lol:
 

Artur5

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A bit annoying if you need to use the heat gun every day to flatten the sign ..
Have I mentioned before that there're other filaments much more resilient to heat and UV than PLA.? ;)
 

The Hat

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A bit annoying if you need to use the heat gun every day to flatten the sign ..
Have I mentioned before that there're other filaments much more resilient to heat and UV than PLA.?
It’s not every day, but nearly, I may have to remake the sign double the thickness and see how that works, but then again I maybe pissing up a rope.., I wouldn’t mind the filament wasn’t bargain basement priced.. It's only 6 mm including the Text..

No matter which type of filament I buy I tend to drift back to PLA as my best option, it does have some issues out in the environment, but better that than the fumes from most other filaments getting into my lungs..
I would have to leave instructions to use a defibrillator and not the heat gun on me..:ep
 

Redbrickman

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Some PLA is more prone to lower temp deforming but by the sound of it Creaity has changed their formula. Sometiems manufacturers also produce bad batches so it could be they had a bad run of the latest filament.
 

Artur5

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No matter which type of filament I buy I tend to drift back to PLA as my best option, it does have some issues out in the environment, but better that than the fumes from most other filaments getting into my lungs..
I would have to leave instructions to use a defibrillator and not the heat gun on me..:ep
Don't exagerate. Or do you think that everybody printing PETG, FLEX, PP and other filaments needs a defribillator ?. I'd be on intensive care by now, because I've been printing ASA for a few weeks.
Fumes from those filament aren't much more harmful than PLA. If the printer stays inside an enclosure even ABS isn't a real concern.
 
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The Hat

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Don't exagerate.
I wasn’t exaggerating at all, some of these filaments are very harmful to your lungs, I don’t use an enclosure and wont, because my printers are in a very big well ventilated area but I’m still cautious about using PLA, despite reports of it been safe.. ABS did my head in..

If ABS, PETG, FLEX and PP would run as good as PLA, then I would use them, but I found them to be troublesome and not worth the inconvenience, despite their clear advantages over PLA.. Besides I have far more fun using PLA and that to me is more important..
do you think that everybody printing PETG, FLEX, PP and other filaments needs a defribillator ?
I would have to leave instructions to use a defibrillator and not the heat gun on me.
Read my post again... :hugs that was suppose to be joke..:hide
 

Artur5

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Yes, I realized that it was a joke ( but all the same you were exagerating, :p ).
We're exposed to every kind of not-so-healthy fumes and particles from many products used in household washing, cleaning, gardening and so on. Not to speak of people who are compulsive smokers.
If your printers were located in your bedroom, then yes I'd say avoid ABS,PC ASA and other filaments, but in a well ventilated shed there's little to worry about.
Anyway, if I keep posting here on a regular basis you'll have proof that ASA isn't that poisonous.
If I disappear suddenly, then well... :hide
 

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I've definitely had a wide degree of experience with different manufacturers and batches of PLA! I think this is probably why Prusa went to so much trouble with their filament to track and supply all the details about each and every roll!

Fortunately, 99% of the stuff I print doesn't require a ton of precision, and can also handle most of the variance. The only exception is the HORRIBLY brittle PLA I got from JMO Technology. Even trying to dry it out didn't help :(

... and yes, I've had PLA get really pliable in the heat... even when it doesn't seem super hot in my car.

... and yes, I'm a little timid to print with ABS because of fumes, but also because everyone talks about how hard it is to print with (compared to PLA).

That said, I'm sure some day I'll NEED a part that needs to stand-up to some heat, and I'll give ABS a try.
 

Artur5

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If you want my opinion, given the case try ASA instead of ABS. Similar mechanical and thermal properties but better resistance to UV and fumes aren't so smelly. I've been printing it lately and I hadn't the slightest problem with warping, even on relatively large parts.
The only real difficulty, compared to PLA, is that filaments like ASA, ABS, nylon or PC need a hot bed ( up to 100-110C ) stable temperatures and no air draughts, so an enclosure is almost mandatory.
 
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The Hat

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That rules me out from getting any good prints from my printers, 100 c bed I can handle but my old place is as draughty as an airport apron and an enclosure is not something I care to use.. So PLA will continue to be my preferred and best option..
That rules me out from getting any good prints from my printers so, 100 c bed I can handle but my old place is as draughty as an airport apron and an enclosure is not something I care to use.. So PLA will continue to be my preferred and best option..

P.S. Print issues are something I seldom suffer from with PLA..
 
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