I just uploaded a full step-by-step tutorial to Instructables explaining how to make my ported Bluetooth boombox from recycled skateboards. While the tutorial explains the process using the reclaimed skateboard wood, it can be easily adapted to use any kind of wood you have available.
Check it out here: https://www.instructables.com/id/Turning-Recycled-Skateboards-Into-a-Bluetooth-Boom/
And of course, if you haven't watched the full YouTube build video yet, check it out below.