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Yes but even the E cig batteries blow up and the resistance on those coils is much higher than the graphite in this project. NiCd or lead acid battery chemistry would be much much safer for this project than LiPo. The lipo have a very small window for charge and discharge where they are happy the rest you will get a visit from some very angry pixies if not right away after a few uses.
short circuiting a Lithium battery in this way is a VERY BAD idea do a google search for short circuiting lithium polymer batteries. There is serious potential for this to literally explode in your hand.
No metal, a 40W co2 laser can cut 3/8" polycarb or acrylic with a couple passes
you would need closer to a 30W CO2 laser to do that
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