Check the listing for details. StewMac Guitar Battery Box Routing Template, for Single Battery Box. Condition: New. Listed at 31.06 USD. Create perfectly shaped cavities for our StewMac battery boxes. Accurate template placement is easy—crystal clear routing templates allow you to see the guitar body underneath. Simply align the template's laser etched centerlines with the markings on your guitar to get placement right every time. StewMac's improved templates are now thicker with smooth laser-cut edges. Correct depth measurements are etched right on the template, so you don't need to puzzle over cavity dimensions, we've done that work for you. "These improved, thicker templates mean I don't have to shim or double up templates to get contact with the router bearing." — Erick Coleman, guitar repairman and StewMac tech advisor This Battery Box Routing Template is for routing a single battery box cavity. Thickness: 3/8" (9.53mm) Outer dimension: 5-7/8" x 3-7/8" (149.22mm x 98.42mm) Clear acrylic Laser etched centerlines and depth measurements Countersunk holes for anchoring the template with flathead screws Create precision cavities every time: Align the template's centerlines with those you drew on your guitar. All you need is double-stick tape to keep the template in place. Optional: use flat head screws dropped into the counter-sunk holes—the router glides right over them. Use your router to lower a ball-bearing router bit (not included) into the wood and make several shallow passes until the bearing rides smoothly along the template edge. When the bearing can ride against the cavity wall, remove the template so you can rout to the recommended depth engraved on your template.Create perfectly shaped battery box cavities every timeAccurate template placement is easy—crystal clear routing templates allow you to see the guitar body underneathSimply align the template's laser etched centerlines with the markings on your guitar to get placement right every timeCorrect depth measurements are etched right on the template, so you don't need to puzzle over cavity dimensions, we've done that work for youA thickness of 3/8" means you get good contact betweeb the router bearing and the template without using shims