BHSB (Big Honkin' Sandin' Block)

Step 4 The Tricky Part

Next step is to attach the other side of the belt to the other board. Youll want to do it such that there is a slight gap under the joint, this is where the tension will come from later. Ive found a 1 to 1 ½ gap (ie two pieces of 3/4 plywood) is just about perfect. If its too tight the belt will tear so dont overdo it. Shove a couple scraps under the bottom board's center cut and then pull the belt up and over and secure it with screws and a spacer blcok. Once the belt is attached then line the two bottom boards up and get it set up like this.