I am not sure what you mean by "gaps". The way I use the stamp is to first, create 2 scribed lines parallel to each other, about 1/2" apart. I take the stamp and align the flat bottom on the inside of one of the lines. The next stamp goes next the first, butting the stamp up to the end of the last stamp's impression. I continue the entirety of the line. Then I move to the second line. The second line's run of stamps is such that the top portion of the stamp (the round part) falls between two stamps on the first line. And yes, sometimes, I have to leave a little gap at the bottoms because I don't always perfectly align the bottoms on the first line. Is that what you are referring to?