Roll Roller

I've got the 808-bearing roller attachment, and it's fantastic for filaments with plastic and solid inner barrels, but it doesn't quite cut it with the cardboard ones. So, I put together this simple cylinder. It's nothing fancy, just a roller to slide inside so your roll can roll more smoothly. Really, it’s all about making that roll roll easier...and how many times can I sneak "roll" into this paragraph, right?