Different tweezers close and contact differently. The Dumont tweezers are made so that they will not close at the top if you hold them lightly, so we recommend it for the “rocking” or “wiggle” technique. When working with multiple extensions to make a fan, these tweezers allow you to spread the extension cord nicely. Once you have opened the extension brush, bring the tweezers closer with a little more pressure and detach the brush from the tape. Other tweezers have no spacing. If you happen to miss the extension tweezers, it is probably because you are not holding the tweezers properly. Hold the tweezers closer to the top.