Add real strings to a Guitar Hero controller - OpenChord.org

Step 4 Cut the Wooden Plug

Now, using a coping saw or a jigsaw, cut along the outline you traced from the hole. You'll now have a thick block of the right shape. Now, measure the depth of the hole; you'll want something that's thick enough to almost reach the bottom of this hole. Cut the block so it's that thick. Next, the top and bottom edges of the block have to be cut so that they rest on the little shelves in the neck, so cut the top and the bottom of the block so that it will fit in the hole flush with the face of the neck.