This is my first attempt at making a solid body guitar. A sort of challenge from my young guitar playing nephew. He has sent me two 1957 Gibson humbuckers. The book I have calls for a 3/8 pattern bit to be used in conjuction with a template. I have been able to find only a 1/2 pattern bit any suggestions? We are using Honduran Mahogany as a core sandwiched between book-matched pieces of Quilted maple. He also wants the top and back carved and wooden knobs to match which I will spin on my lathe. I have been involved in wood-working for a number of years and have found that given the proper tools and instruction anything is possible. This site is by far the best I have run across and I have been researching this project for about a month now. Thanks Bobb