Uhh... once again, I'm finding a life hack where someone is using plastic and heat. Granted, K-Cups are SUPPOSED to be safe for use, but re-use? I don't know about that. If you compare this with milk or water jugs, they're indicated for a maximum of one reuse. After that they leech plastic into the liquid you put in them, and that is with cold liquids! I'm scared to think that K-Cups might leech plastic from the first use, but it might be that they leech after a second or third use. Who has info on the safety of reusing K-Cups? In the life hacker "culture" as it were, people seem to have a tendency to just grab stuff and off they go to do whatever, seemingly without any real knowledge of how safe or unsafe what they're doing is much of the time. Who has actually done homework on this? Take care and be safe!