I have to use the pin vise to re-open the tip on my bottle of ultra-thin super glue, but not the medium-viscosity stuff that I have. When you need another bottle of the medium, try the Gorilla super glue with the light blue cap. It has a tip design that never clogs. You just occasionally have to knock off the dried chunk of glue that collects around the rim of the tip, but the tip itself doesn't clog. It also doesn't dry out in the bottle as quickly as others I have used.