A lot of people push for Capricorn Tubing on their Bowden system. In fact, I have it myself. I recently found out about an issue that surprised me, but it makes sense when I think about it a little bit more. Capricorn is known for having high precision, tight fitting tubing to connect the extruder to the hotend. Using Capricorn tubing solves a lot of feed issues and ensures consistent prints, or does it?

What happens when you have a high precision tube that fits around filament with significant width variation? That’s what some printers are experiencing. The solution? Printers are finding that they either need to switch to more precise filament, or that they need to switch to a larger diameter Bowden tube.