There is no data on what button press most accidents happen nor if it was a short circuit in the atty or an internally damaged/overstressed battery .... Let's not invent new myths without factual evidence.
The recorded cases where a vape exploded in someones face are rare, you read about them going off in people's pockets/purses (often it turns out it was loose batteries) or while charging far more often.
Are you sure the helpfulness of test-firing a mech away from your face after a mechanical change to the device is a myth? I get that there might not be data to show it is safer to do this, but I've been reading up on causes of shorts and, from what I have read, it's far more likely that you'll have a short from a faulty coil build than from a battery malfunction.
Here is one such claim from Mechanical Mod Won't Fire? Fix a Mech Mod With These Tips - eCig One :
"A short circuit is any situation in which electrical current flows along an unintended path. A short circuit could result in a variety of negative consequences such as an electrical shock or battery explosion. Of course, a short could also cause a mechanical mod not to fire. We’ve already discussed situations in which a damaged battery or fire button could cause a short. It’s far more common, though, for faulty coil builds to cause shorts. If your mechanical mod won’t fire, check the atomizer with a resistance tester. If the coil build worked previously, it may simply be that the mod was bumped or jostled, causing one of the coil leads to come out of its post. If the coil build has never worked, a coil may be touching the drip well or side of the RBA."
Now, if the coil build has never worked, it would most likely be much better to discover this with the mod pointed away from your face and head. Sure, it might work and then suddenly become unmounted if it is "bumped or jostled", but a certain percentage of accidents may involve the fact that the coil build is not safe from the start, in which case a test fire with mod pointed away from the head would allow for a somewhat safer examination of whether the the mech is shorted or an open circuit with greater potential to short. If bumping and jostling can cause this, how much more could bumping and jostling cause this after removing or replacing the top cap? It's common sense, isn't it?
The statistics might not prove what I am saying, but that doesn't make what I am saying a myth. I doubt one could find evidence that a mech mod is better off malfunctioning in the pocket or hand than in the face or head, but if I had to choose an accident I'd have it in my pocket, not pointed toward my head.
I do think this is worth discussion, and I welcome your comments. If I'm wrong, please tell me. I don't need to be right, but I do want to be as safe as possible. Also, I have noticed a lot of mech users test firing their coils. Why do they do this if not for safety?
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