How to Build a Camper in 10 Simple Steps Step 8: Aluminum Head to our YouTube channel @wandertears to see the full video! Here are a few tips when it comes to installing your exterior finish of your DIY Camper. We like to use aluminum because it is easy to install, durable, and makes waterproofing your camper simple. * Seal your wooden shell prior to installing aluminum. * Cut your curves with a jig saw or router. Add a little WD40 if using a router to make the cuts smoother and easier. * Dry-fi