to have a clean edge, you have to cut the two pieces of leather together and at the same time once sewn, then, without sanding, pass either an acrylic primer and then sand and then pass the color of edge giardini style, and then sand again and put a new coat of paint.me I cut and then I pass tragacante gum,burnishing, I sand and wax with beeswax several times, burnishing,but before I passed the carnuba wax.