About this 3D model

this allows you to pull back lever and place feedstock in without much trouble. the holes that the threaded bolts go thru are coned and make it easier for lever to move. i references and used parts of these: http://www.thingiverse.com/thing:3184 http://www.thingiverse.com/thing:3462 openscad file is there for your experimentation. gcode file available as well. enjoy!