Step 8: Making the Penny Stove (Cutting the Pieces)
1.) Using the razor blade rig (Image 1), score both cans approximately 1.5" from the bottom. Note that the score line does not have to be particularly deep, as it's just a "guide" that allows the can to split where you want it to. A couple of passes is usually sufficient. See Image 2.
2.) Once scored, poke a very small hole in the line with razor. (Image 3)
3.) Using your thumbs, gently press on the top portion of the can to cause the "hole" to continue to "tear" along the score line. (Image 4)
4.) The scoring will cause the can to continue to "tear" along the score line, giving you a very clean cut. (Image 5) Remove the bottoms from both cans this way.