There is no seam allowance on those dies to allow for hand turning. However, the sales pitch on these is how easy it is to apply fusible to the wrong side of the fabrics,make your cut and they come off all ready to fuse to the background block. I recently used this method to cut out flowers, stems and leaves to do appliqued borders on a raffle quilt. The cuts are precise and mulitples can be cut (up to 10 layers of fabric). I was very glad that I had the Accuquilt Studio to make the job easier and saved me cutting out tons of pieces to say nothing of all the tracing I would have had to do.