This file is just a template to make yardzee dice from 4x4 planks.
Cut the 4x4 into 3 1/2 inch blocks and use the guide to drill your die marks evenly every time.
1 Yardzee Guide
1 4x4 at least 2 feet long
1 set of forstner bits (https://www.harborfreight.com/14-in-1-in-forstner-drill-bit-set-with-38-in-shanks-7-pc-62361.html?_br_psugg_q=forstner+bit)