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MSD · 01-11-2011, 10:58 PM

You sure hit the nail on the head, I know nothing about drugs or explosives

You also seem to have misread my poost. I didn't say I don't trust the plastic to do what it's designed to do or that it's unsafe to poke a hole in an empty lighter, I said I don't trust it to be self sealing to the extent that it will safely contain the pressure. For argument's sake, the boiling point of butane is 33°F and the temperature of my leg as measured with an IR thermometer right now is 90.5°F, putting vapor pressure of a filled lighter just over 3 atmospheres.

With a ballpoint pen, you're looking at a 2mm to 3mm hole poked in the bottom of the Delrin 100 plastic that Bic lighters are made of, the datasheet for which is here, and I hit a wall there because those values are useless without a proper measurement of the thickness of the reservoir of a Bic lighter. I'm not sure when I'll be able to get to it, but rather than do the math I'm going to fuck with some lighters and get it on camera to make a few points about safety and determine whether it will really seal itself up safely. I'll also blow up a few for fun.

I also trust CDs, which are made of a different type of plastic, not to explode in the drive (although you can find many reports of this happening on various forums) because a bunch of inquisitive Swedish guys tested them to determine safe spin speeds and I have not seen a drive that exceeds that "64x" upper safe limit.

01-11-2011, 10:58 PM	#46 (permalink)
MSD The sky calls to us ... Super Moderator Location: CT	You sure hit the nail on the head, I know nothing about drugs or explosives You also seem to have misread my poost. I didn't say I don't trust the plastic to do what it's designed to do or that it's unsafe to poke a hole in an empty lighter, I said I don't trust it to be self sealing to the extent that it will safely contain the pressure. For argument's sake, the boiling point of butane is 33°F and the temperature of my leg as measured with an IR thermometer right now is 90.5°F, putting vapor pressure of a filled lighter just over 3 atmospheres. With a ballpoint pen, you're looking at a 2mm to 3mm hole poked in the bottom of the Delrin 100 plastic that Bic lighters are made of, the datasheet for which is here, and I hit a wall there because those values are useless without a proper measurement of the thickness of the reservoir of a Bic lighter. I'm not sure when I'll be able to get to it, but rather than do the math I'm going to fuck with some lighters and get it on camera to make a few points about safety and determine whether it will really seal itself up safely. I'll also blow up a few for fun. I also trust CDs, which are made of a different type of plastic, not to explode in the drive (although you can find many reports of this happening on various forums) because a bunch of inquisitive Swedish guys tested them to determine safe spin speeds and I have not seen a drive that exceeds that "64x" upper safe limit.