Burr shape, finishing. In this image you will see the point of the burnisher being used to remove the roughness inside of the burr. Many burnishers are made today without the point as I fear this knowledge has been lost. William Daum who is one of Americas most prolific lute makers jnjured himself,cutting his thumb with the point of the burnisher after I showed him how to use one about 1962. Please be careful of the scraper edge and burnisher point. The drawing shows an approximate burr profile. Wipe the scraper clean with a paper towell or rag, wipe off the whet stone and you are done.