Let’s face it – applying new Kapton tape to your print bed isn’t much fun. But right now, it’s the best printing surface for ABS. Eventually, we’re likely to find ourselves having to replace it. Getting a good application without air bubbles can be tricky, but it’s the key to getting a nice, smooth surface on the bottom of your prints.
After trying just about everything, I’ve come up with what I believe to be the best possible technique: