Printrbot Simple Filament Guide (for any 8mm Rod)

Filament guide for the top of the Z axis smooth rods on the Printrbot Simple. Could be used on any printer with exposed 8mm smooth rods.

I've had a few people comment that it printed a little big for the 8mm rod. I've added a second version that has an internal diameter of 8.1mm, so it should be almost exactly right. The through hole is 3.25mm so that you can use it for either 1.75mm or 3mm filament.

You'll probably want to print the new one upside down so that the opening is up.