i"ve been using it 4 about 30 years...the trick is u cant use normal s-glue,it"s viscosity is to thin,goes off to fast & produces to much heat..... go to a hobby shop & get 10 to 15 second , slow setting... fold a tissue 4 or 5 times apply glue to tissue then wrap tissue over wound hold till set 3 to 4 min....trim off extra tissue & then glue around the edges... nothing gets in ,& 2 to 3 days in peels off... clean & reset ..if required good luck !!!!