PTFE Bowden tubing for smoother 1.75mm filament feeding

Capricorn Premium PTFE Bowden Tubing TL Series is a premium Bowden tube for 1.75mm filament that improves feed consistency and supports more reliable extrusion. The tubing is made from pure Japanese Polytetrafluoroethylene (PTFE) resins and is manufactured for perfect roundness and a constant diameter through its length.

That consistent internal path helps filament travel with less resistance, while the translucent tube body lets you see what is happening inside the tube during printing and troubleshooting.

Key features that improve extrusion consistency

• Premium PTFE construction: Made from pure Japanese PTFE resins for a flexible tube build with chemical resistance.
• Consistent geometry: Perfect roundness across the tubing's length and a constant diameter help support steady filament movement.
• 2.0mm inner diameter: Sized to account for the unevenness found in some enhanced filament types.
• Low-friction feed path: A low coefficient of friction helps filament move easily through the tube without losing the force needed for extrusion.
• Friction-reducing additive: The tubing is treated with a friction-reducing additive.
• Flexible and durable: The PTFE build is described as flexible and resistant to wear even with excessive use.
• Translucent tubing: The tube body allows visual checking of filament movement inside the Bowden path.

Why the TL Series suits uneven and enhanced filaments

Enhanced filament materials such as wood-filled and metal-flaked filament are generally uneven in diameter because of the external material added to the polymer or filament. The TL Series uses a 2.0mm inner diameter to take that unevenness into account.

That makes the tubing a practical option when you need Bowden tubing for 1.75mm filament that is not always perfectly uniform. The product details also state that the tubing supports soft filament.

How the tubing helps reduce common Bowden extrusion issues

Capricorn TL tubing is designed to help resolve extrusion problems by reducing drag in the filament path. With lower friction inside the tube, filament can move more easily from the extruder toward the hot end.

The tubing also helps reduce the bending effects caused by extrusion pressure. In some extrusion systems, that pressure can bend filament before it exits the hot end, but the tight internal diameter of Capricorn Bowden tubing is machined to drastically reduce that bending during extrusion.

Important TL Series tubing features

• An inner diameter of 2.0mm
• Perfect roundness across the tubing's length
• Treated with a friction-reducing additive
• Supports soft filament
• To be used with only 1.75mm filament types
• Sold in lengths of 100mm or 1 meter

Use cases for Capricorn TL Series Bowden tubing

This Bowden tube is suited to 3D printer users who want a more consistent filament path for 1.75mm materials, especially when printing with enhanced filaments that can vary in diameter. It is also useful when diagnosing or reducing feed resistance, pressure-related filament bending, or other Bowden extrusion issues.

The translucent construction makes the tubing useful for users who want to observe filament movement directly inside the tube while tuning extrusion behaviour or troubleshooting feed problems.