Arching and purfling -- order of operations in The Pegbox Posted November 5 · Report reply On 11/2/2019 at 11:17 AM, Nick Allen said: Use a little ivory soap on the edges to help the purfling marker move easier, and don't forget to glue size the spruce with weak hide glue before marking and cutting the purfling channel. That makes so much sense! I'm building my first violin and the short grain kept breaking off. I didnt even think about that! This board is great!