This most definitely applies to hand warmers too. With the right hand warmer, you can pleasantly recreate in virtually any cold-weather setting and still enjoy toasty-warm digits. After putting 11 ...

The first 'reaction' that we tried for our hand warmer involved dissolving potassium carbonate (K 2 CO 3) in water. Potassium carbonate is one of the chemicals left behind in the ashes of burnt wood.

But not so with the Go Warmer. This lozenge shaped device is not ... You can hold in in your hand, put it in your pocket, maybe even sit on it if you’re particularly daring.

To enable this, [Greg] 3D printed a small crate with plenty of vents, into which he stacked six hand warmer sachets. An egg was nestled in the center – a perfect choice as it can be cooked in ...