Step 4Getting the pinhole started
Take your soda/alternative beverage can and cut out a square. In all honesty, it doesn't really matter what size of a square you cut out, except it needs to be larger than the 6 mm square you cut out earlier. I didn't really measure mine, but I think it was a 12 mm square, more or less.
Now that we have the square, we need to tape this down above the 6 mm hole. It's important that you just tape the square down along the edges. Do not entirely cover the aluminum square- We're poking a hole in it later.
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