IMG_1959.JPG
Take either the piece you just cut off (if it's about 6" long, or more), or a previously, cleanly cut piece, and butt it gently up against the edge of the piece you just cut. Be careful not to nudge the left piece at all. This is where our precision is coming from, so even a bump you can't see could jog it a hair to the left, which would mean we're not getting things exactly aligned, as we want.
IMG_1959.JPG
Take either the piece you just cut off (if it's about 6" long, or more), or a previously, cleanly cut piece, and butt it gently up against the edge of the piece you just cut. Be careful not to nudge the left piece at all. This is where our precision is coming from, so even a bump you can't see could jog it a hair to the left, which would mean we're not getting things exactly aligned, as we want.