So how safe is PLA

I was wondering about making actually drinking cups or mugs out of PLA that would hold water, beer, soda, milk, etc. Is it safe to do so I know PLA is biodegradable but not sure if it can be eaten from or drank from?

If not PLA, is there other material that would work better?

 

I was thinking more for pool side where you don;t want glass so most things would be cooler anyway soda beer tea

 

so as long as I only drink German Beer I should be OK...LOL

Thanks Mathias,that does tell to look further as well

 

your bigger issue will be making it watertight. I printed a 0.25" solid wall thickness pla part. I set it in water to help remove it from the BP and was quite surprised when it whicked water right to the top of the part. It was like it was sweating.

So, you're probably going to need to coat it with something. You can make that something be some kind of a food safe lacquer. Maybe someone else has some ideas.

 

That is strange I am actually testing a failed piece now I have a 3layer base and a 3 wall perimeter printing at 200microns and I think I set the perimeter and base extruding width to 105% and it is holding water very well granted it is only 1/2" tall not much of a cup or a glass but it is holding the water just fine I set it on a paper towel expecting the worst but it is holding its own ...pun intended.
A 3 wall perimeter at 105% of .4 yields a 1.26mm wall it has been on the paper towel for almost 30 minutes now with no leaking or seeping issues



The bubbles you see are from the carbonated drink.

The flat edge seen at the top is NOT the width that is why it failed z for got to go up and it simply printed a wider rim you could call it but the walls are indeed 3 thick.