If you're building self bows, laminated bows, or finishing one of our many bow kits you'll need a tillering stick with a top notch of approx. 1 1/2" x 3" and 28 side-notches cut 1/2" deep for strength, spaced 1" apart. Tillering board is 35" tip to tip and actual dimensions are approx. 3/4" x 3 3/8". (1 x 4). The tillering process is much easier with this tillering board made of clear pine