Which radius for lining sanding disk to match StewMac kit?

[patrickb]

Stew Mac instructions for their acoustic guitar kit shows creating a sanding stick with a 5 degree wedge on one side and a 1.5 degree wedge on the other side to sand the back and top kerfed linings. If I wanted to get the Concave Luthier Disks from Blues Creek Guitars to use in stead of the stick which radius would match 5 degrees and also 1.5 degrees? Thanks!

[tippie53]

I use 15 on the back 28 on the top but the key isn't to radius the entire top only a portion of it that holds the fret board extension so your neck angle lays on the top in a straight line. Feel free to call me I will be happy to talk you through this.
Here is a link to my video

https://www.youtube.com/watch?v=LrgRKKsxL-M

[patrickb]

Thanks, John!