I have used a burner for a few years and love it.I always keep a bare shaft and check the clearence before I burn.Because the ribbon will sometimes move alittle after the ribbon heats up.I adjust it close to the shaft but not to burn the quill of the feather and I'll trim the last part of the feather with an exacto knife.I have been using two ribbons to burn my shield cuts.The first ribbon I use is to burn from the front to the back the sweep of the feather.Then I'll take that ribbon out and the second ribbon I use to trim the tail end of the feather.It sounds like more trouble but I can burn shield feathers 3",4",4.5" or 5" & 5.5" with just two ribbons.And with two ribbons I can make the shield any height I want also.Or one ribbon works alone for a pope&young burn.Instead of a ribbon for each feather length.I have found this easier then trying to make a ribbon to burn a complete shape,because then the feather needs to be the exact same length and you have to worry about two ends touching th shaft.If you use gasket lacquer touch the shaft with a hot ribbon will light up the shaft like a match.