I am very interested in World War I, and after hearing that the last WWI veteran died I decided to make this as a tribute to all of the brave soldiers that fought in the first world war. After the build, I was pleased with the result so I built another one. I built this out of steel and copper for the treads. It is held together by rivets because it is more permanent than hot glue. I decided to build the Mark I because it is an iconic WWI war machine and I personally like the look of it. Thanks for viewing, I hoped that you enjoyed it!