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The wood for the top and bottom of sound box can be found at Woodcraft or Klingspor Woodworkng shops to name 2. Ask for where they have the 'thin stock'. You will find nice pieces of 1/8" stock in many woods like Padauk, Sycamore etc. There will also be 1/4" and even 5/16" pieces but you want the 1/8" think stock. You'll see the prices are not crazy but it will cost you $20 or so for enough to make two strumsticks.