Well right now I have the Joye 510 carto's. They are the fully black, plastic ones. I got them cuz it was my first order and had no idea what I was doing. They are a pain in the rear to clean out, so my next order of carto's, I plan to get some that are much easier to refill and clean. I want the metal ones that can be boiled I think.
You don't want to boil cartos! Boiling will shrink the fillers and degrade the future performance. Just use hot tap water to flush out cartos.
A month ago, I poured boiling water into a bowl that contained the first batch of 15 cartos that I had used for about three weeks and let them soak for a while. Using boiling water shrunk the filters by at least 33%, and there was a funky taste. I will no longer use boiling water to clean cartos. Those 15 cartos will never be used again.
I've been using and refilling my second batch of 20 cartos for the last month. I was gonna throw them away, but decided to experiment one more time with cleaning cartomizers.
Yesterday, at about noon, I let them soak in hot tap water (it wasn't that hot) for a couple of hours, then I flushed them out using the syringe method described in my blog, and let them soak in tap water until about 6:30 am this morning. I just finished flushing them out and pushing air through them to remove all the excess water. They're now sitting in front of a fan and will remain there for at least four full days.
I did an experiment a couple of weeks ago using a defective carto. I removed the filler from the defective carto, soaked the filler in water, squeezed the excess water out of the filler, placed the filler back into the carto, and set the carto by a fan for 2½ days. After 2½ days, the filler was still slightly damp, so that told me that I need to let them dry for longer than 2½ days. Four days would probably be enough time. It's not good to refill cartos with
juice when the filler is still wet or soggy.
In about four days, I'll fill one of the cartos I just flushed to see if it's vapable and has good and clean-tasting flavor, vapor, and throat hits. I don't expect that I'll keep any of the 20 cartos I just soaked and flushed, because I really don't expect that cleaning them will help to extend their lives.