This video will show you and give you some ideas on how to build a jet /rocket stove using a five gallon bucket and concrete.. I filmed it on Fathers Day 2014 and am just cleaning up my phone and got it uploaded today... It works great and is a must for those who would like to have the option of having a great way to cook using sticks in the back yard (uses a fraction of what it would take over an open fire... We love it as a back up and it works on very little wood ... Others have said it would work even better to have a longer input into the feed section in order to have a better and even more efficient burn... thanks for your input, to help all of us :)... God Bless