SP1 hotend

THIS IS A WORK IN PROGRESS

Many hotends seem designed to jam. I'm working on this design to hopefully reduce one source of jamming - the number of physical connections the filament must meet. Most of my jams seem to take place at the nozzle/aluminum block or at the "neck"/aluminum block meeting points, so making the heating block surround the hotend rather than relying on the soft aluminum as part of the mechanical structure itself. I still need to put in real values for the filament intake hole size and thread as well as the nozzle hole size and thread so DON'T MACHINE THIS PART unless you make the changes in the solidworks file. This is made using Onshape and I still need to figure out how to make the threads correctly.