Learn how ordinary blue painter's tape can help you cut tight-fitting dovetails every time. Michael Pekovich's method has been tested on novice woodworkers and it works remarkably well. Just lay a strip of blue tape across the end grain and scribe the joint. Peel away the waste areas, and use the tape as a guide for sawing and paring. Not only does it make layout lines easier to see, but it also serves as a guide for your saw and chisel, ensuring accurate dovetails.