Stack Builder Templates. These can be used when designing the layout of your stack for stacks which have very tight spacing. As opposed to testing your stack spacing on the frame itself, these stack builders allow you to look all around the stack and identify any board components which may be touching.

Included in the pack are 2 stack builders.
1. For 16 x 16, 20 x 20 and 25.5 x 25.5mm stacks.
2. One for 30 x 30 stacks.

They are cut from 2mm plywood.

An example of various thicknesses of stack spacers used to give adequate clearance between each stack board.

You can check clearance with the top plate by attaching your frame standoffs to the outer holes and then placing a ruler on top.