Now, for the bases up above, the idea of these were to slide on each other and creating a single rotation axis for both of the bases. The bases rotate currently around one tube of 2" PVC pipe. The PVC pipe allows for both bases to turn and twist on one another without slipping and sliding around on one another insecurely.
The above; this was our protractor of sorts on the side of our base, allowing us to incline or decline the cannon in appropriate proportions that allow for the cannon to be at a specified degree. Creating this piece alone was tricky for us, the circles kept looking off, and in the original piece, we include lines drawn out from the biggest whole, connecting to all the small wholes. In theory, this would help us create a easier to understand protractor, however when we cut the piece out on the shop bot, the piece came out ragged, and shredded around what was actually important in the piece (it was shredded and had splinters coming off and around the wholes).
The pieces above is what created the A frame as we call it. The two longer pieces with angles are crucial to allowing the cannon to incline and decline. We created two sets of these long angled pieces to attach one either side of the base and create the longer rectangular piece and smaller square piece with the 2" whole to attach these longer angular pieces. These pieces hold the cannon together and at the same time, allow for the cannon to be pulled up and down. Once these pieces are attached to the cannons base, it allows for the cannon to be twisted and turned at appropriate degrees as well.