is PLA safe?
Conrad2468
toy...also, is ABS safe?
Peter Davoust
rest of you, but when I was a kid I used to chew my Legos. I'm pretty
sure that I swallowed a few ABS shavings and my dog probably ate some
Lego pieces. I'm still alive. And my dog didn't die of Lego poisoning.
So I'm assuming that, in small quantities, ABS (or at least the kind
used for Legos) is safe to chew.
Since PLA is biodegradable I would assume that it is even safer, but
there might be some residual ABS in the plastruder, and since I know
little to nothing about how PLA interacts with the human body on a
chemical level, I can't really say more than I would assume it's safe
(and we know what assuming does.)
What would concern me more than the chemical aspect of either plastic
is the fact that if a dog ate a plastic object and swallowed it (or a
piece of it,) it could become lodged in his intestines, which could
potentially either occlude them or tear them. Either way, this is a
problem, and if you're lucky you'll be out a few hundred dollars for
surgery. The piece might get out just fine, but it's risky.
Long story short, I wouldn't recommend letting your dog get a hold of
either sort of plastic, but if he finds and eats them accidentally I
think he should be ok as long as they don't get stuck. Just keep an
eye on him and try to make sure that the plastic part does in fact
exit safely a day or two later.
-Peter
Cliff Biffle
> Since PLA is biodegradable I would assume that it is even safer, but
> there might be some residual ABS in the plastruder, and since I know
> little to nothing about how PLA interacts with the human body on a
> chemical level, I can't really say more than I would assume it's safe
> (and we know what assuming does.)
E. coli is also biodegradable. It's important to check the Material
Safety Data Sheet for questions like these.
Fortunately, PLA does look reasonably safe. Here's the ridiculously
long URL for the MSDS for 4032D:
I'm not a doctor nor an expert in these things, so take my summary
with a grain of salt: I wouldn't go out of your way to eat it, and I
would say making a PLA object with the intention of having your dog
chew on it is a bad idea. But if you *do* ingest some you're probably
more at risk from it being hard and pointy than it being PLA.
Also one MSDS notes that hot PLA can burn you. Like, y'know, most hot things.
-Cliff L. Biffle
Cathal Garvey
If you were to eat a lump of PLA, odds are it'd go though you undigested unless it snagged, as mentioned above. Whatever leached out of the plastic along the way is unlikely to do much harm as a once-off thing, unless the company supplying the PLA added some nasty plasticisers to the mix.
Which raises the question: How much can Team Makerbot find out and publish about their PLA/ABS sources with regard to added ingredients? We know that ABS isn't perfectly food safe, but are there other things in there to worry about? How about the PLA, which I know some people will be buying for food related projects?
Conrad Farnsworth
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Not everything that counts can be counted, and not everything that can be counted counts.
Rick Pollack
http://blog.thingiverse.com/2009/09/13/for-foodies-out-there/
Nate True
approved for food packaging use.
On Jan 14, 8:16 pm, Rick Pollack <r...@makergear.com> wrote:
> There was a related blog post on Thingiverse a while ago...
>
> http://blog.thingiverse.com/2009/09/13/for-foodies-out-there/
>
> On Thu, Jan 14, 2010 at 11:06 PM, Conrad Farnsworth
> <robot.lig...@gmail.com>wrote:
>
>
>
> > When i went to this college for a camp, i do believe they had PLA cups. do
> > id say its relatively safe for food use.
>
> > On Thu, Jan 14, 2010 at 4:57 PM, Cathal Garvey <cathalgar...@gmail.com>wrote:
>
> >> PLA is "polylactic acid", and is derived from lactic acid, which is itself
> >> found naturally in the body in small amounts and would be found in many
> >> foods commonly eaten. In small amounts, that is.
>
> >> If you were to eat a lump of PLA, odds are it'd go though you undigested
> >> unless it snagged, as mentioned above. Whatever leached out of the plastic
> >> along the way is unlikely to do much harm as a once-off thing, unless the
> >> company supplying the PLA added some nasty plasticisers to the mix.
>
> >> Which raises the question: How much can Team Makerbot find out and publish
> >> about their PLA/ABS sources with regard to added ingredients? We know that
> >> ABS isn't perfectly food safe, but are there other things in there to worry
> >> about? How about the PLA, which I know some people will be buying for food
> >> related projects?
>
> >> --
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> > Not everything that counts can be counted, and not everything that can be
> > counted counts.
>
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Cathal Garvey
Awesome! Looking forward to using it someday.
On Jan 15, 2010 5:48 AM, "Nate True" <nate...@gmail.com> wrote:
The MSDS for the PLA sold by Makerbot says that exact formulation is
approved for food packaging use.
On Jan 14, 8:16 pm, Rick Pollack <r...@makergear.com> wrote: > There was a related blog post on Thi...
> <robot.lig...@gmail.com>wrote:
> > > > > When i went to this college for a camp, i do believe they had PLA cups. do > > id say its ...
> > On Thu, Jan 14, 2010 at 4:57 PM, Cathal Garvey <cathalgar...@gmail.com>wrote:
> > >> PLA is "polylactic acid", and is derived from lactic acid, which is itself > >> found natural...
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MCK
humans. they stitch you up and just leave it there, where it degrades
into lactic acid in your body, and is then absorbed into your body
just fine. Don't think the stuff MakerBot sells is medical grade, but
it can't be too far off (so yes, its safe).
On Jan 15, 2:32 am, Cathal Garvey <cathalgar...@gmail.com> wrote:
> Awesome! Looking forward to using it someday.
>
> On Jan 15, 2010 5:48 AM, "Nate True" <natet...@gmail.com> wrote:
>
> The MSDS for the PLA sold by Makerbot says that exact formulation is
> approved for food packaging use.
>
> On Jan 14, 8:16 pm, Rick Pollack <r...@makergear.com> wrote: > There was a
> related blog post on Thi...
>
> > <robot.lig...@gmail.com>wrote:
> > > > > > When i went to this college for a camp, i do believe they had PLA
>
> cups. do > > id say its ...
>
> > > On Thu, Jan 14, 2010 at 4:57 PM, Cathal Garvey <cathalgar...@gmail.com
> >wrote:
> > > >> PLA is "polylactic acid", and is derived from lactic acid, which is
>
> itself > >> found natural...> >> makerbot+u...@googlegroups.com<makerbot%2Bunsubscribe@googlegroups.com>
>
> <makerbot%2Bunsubscr...@googlegroups.c om>
>
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Ryan
porosity but meh. I'll figure something out.
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bre pettis
Bre
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