About this 3D model

Hey guys, I recently made this project. However i wanted to add some durability to the build by putting in room for a 1/2" threaded rod (I believe it's 12" long) which goes through the handle to the head. I also split apart the head of the hammer so i could print it without supports, and giving me a preferred direction for the layer lines. I printed the whole thing on a stock cr10s. Keep your eyes up, guardian. :)