At StickerGiant, our stickers and labels are cut with lasers following a path around the artwork.
To properly set up a cut path, use a vector image with a 0.5" pt stroke in 100% magenta. The cut path cannot have any sharp corners. (Our lasers don't do well with those!) Our standard corner radius is slightly rounded at 1/8”. The minimum corner radius we can print with is 1/25" or .04”. Read more here.