Welcome and thank you for taking time to join Doomsday Prepper Forums.com. Your presence here is much appreciated. We look forward to your posts, and hope you enjoy the community!What are some good materials to build a bunker out of that you can obtain for cheap or free?
Concrete blocks worked for me, here is the post with pics and a link to the plansWelcome. Concrete blocks are probably one of the cheapest ways to go. Use some rebar rods and fill the holes, and you'll have a pretty cheap but sturdy bunker.