Please review Pictures 14D and 15A in the Easy 3D Assembly and Operations Manual. The power module firewall is the plywood piece that the engine "T-beam" mounts are attached to. The fuel tank is attached to the power module firewall and the fuel tank stopper and in/out tubes extend from the tank forward and through the power module firewall.

 

Use Template A.  Use scissors to trim to the outer perimeter of the power module firewall as shown on Template A. Attach the template to a suitably sized piece of good quality 3/16 inch plywood using a glue stick. You may wish to only attach the center and perimeter of the template to the firewall if you wish to more easily remove the template from your firewall later on.

 

Center punch the two holes marked A and the center hole at the intersection pont of all of the lines. Drill all three center punch locations with a 7/32" drill.

 

Use a scroll saw to cut the plywood to match the perimeter shape of the template.

 

Plywood with Template A - Before Cutting	Power Module Firewall - After Cutting