Zippo hand warmer in hammock?

[sqidmark]

Generally speaking, if you pour cold liquid into a cold container, filling it to capacity, and then place it where it will warm up, the now warming liquid will likely expand beyond the containers capacity. It "leaks" because it has to. It doesn't necessarily have to become hot for this to happen. I have no idea if that's what's going on with the zippo, but it seems plausible.

[TrailSlug]

Yea, I had one of these and getting a good one is hit or miss these days. Now I just carry hot hands which are easier to use and safer.

[Red Wing]

Never had issues when used correctly.

[XJ35S]

walmart has hand warmers that are reusable indefinitely so long as they aren't punctured. You boil them to prep for next use. It's a chemical reaction set off by a sonic click of a little metal button inside. Very hot and last a decent time.

I have used Jon-E hand warmers on the dairy for years. Never been burned by any leaks. You really should not over fill. They burn the vapor so extra fluid is no benefit. I kept it in my sweatshirt pocket inside my carhart bibs. Easy 6 hours of continuous heat. Easy to refill and restart. I wouldn't hesitate keeping one inside a sock at my feet in the hammock. They DO NOT get hot enough to melt nylon on their own.They can burn exposed skin, hence the sock.

[Bubba]

I've used them in the past. Sometimes they would go out depending on how little oxygen was getting to them. I actually got burned from one when I accidentally fell asleep in my hammock and had it on my chest for a long time. My skin got burned from length of exposure not high temperature. Mine have become less consistent and I've turned to a battery operated warmer that doubles as a charger. It's safer and doesn't rely on oxygen so I can put it anywhere. It won't heat up a quilt like a hot water bottle but is good for spot warming areas. It's heavy and bulky but it's a trade off I don't mind.

[Gqgeek81]

I've used mine many times in the hammock and wasn't even aware they could leak. Perhaps more alarmingly, I ALWAYS overfill mine

It came with instructions to use a double dose of fuel the first time to break in the device and never do so again. Pfffftt... if it can handle it the first time, it can handle it every time. Logic!

So yea, I've never had issues with it and it doesn't leak even if I turn it upside down, but I will be considerably more careful with it in the future. I also have another brand I got in Massdrop in the spring I haven't had a chance to use yet.

[Crazytown3]

Interesting discussion. I used to have one of the old solid fuel hand warmers that I took with me when winter camping. When it worked it was great, but it had a tendency to extinguish within an hour or so, and cleaning it out was a challenge.

Mine have become less consistent and I've turned to a battery operated warmer that doubles as a charger.

Thank you! I just added this to my camping list on Amazon.

[Red Wing]

The catalytic converters go out after while. You can buy replacements that slide right on.

[Hiker Boy]

I winter camped once with one in a shirt pocket. I woke up the next day with a singed shirt and a burned chest. I got lucky.

[brohawk]

I winter camped once with one in a shirt pocket. I woke up the next day with a singed shirt and a burned chest. I got lucky.

Wow..I had no idea I would get this many horror story responses. Was yours an older one? Not sure if that matters or not.