The Basse Taille project in the book provides a few ways to get a pattern onto your metal. Below provides more information.

CuttleBone Casting

One way to get a pattern is with a cuttlebone casting, which is mentioned in the book. However, I was not able to get a high resolution photo to include, but have one for the web. Cuttlebones provide a really cool pattern for enameling a Basse Taille piece. Here is one from artist James Malenda, titled "Dawn and Dusk by the Jersey Shore". You can learn how to cast cuttlebone on the web or from one of the instructors, like Kristina Malcolm, I've listed on my Educaiton page; this link is only 1 video, but you can check out others by searching.

GuillochÉ/Brocade machine

The book talks about various types of Guilloché and mentions the Brocade machine, but a sample was not given. Here is one without enamel that was created using different 3 machines - Rose, Straight line and Brocade. Use this link to see the enameled piece and a link to the artist who sells disks to other artists.