Filament Filter and Lubricator Printrbot Gear Head Extruder

thingiverse

Here is a custom-made filament filter and lubricator I designed for my Printrbot Simple Metal Gear Head Extruder. The filter has a tendency to rotate slightly as it spins around the filament, but the tabs keep it upright and prevent it from spinning completely out of control. To install it, simply cut a piece of foam and shove it inside. Next, poke a hole through it for the filament. If you're experiencing clogging issues with your all-metal hot end, a single drop of oil at the top every now and then (I personally use canola) should do the trick. Print without supports.