Bondtech MK8 CHT 0.4 coated brass nozzle

Advantages of the Bondtech CHT technology

Bondtech CHT® nozzles split the filament into 3 thinner strands allowing to melt the material from within. In doing so, the material melts faster and higher flow rates can be used.

• No problem with doing cold pulls or atomic pulls
• No problem with retractions

Core Heating is a patented technology

Registration number: EP3445568A1

Nozzles for 3D printers made of metal with at least one or a multitude of holes to increase the surface area of the heating walls.

Advantages of the Nickel Coating

A Nickel coating is applied to our Coated Brass nozzles to provide protection against corrosion, erosion, and abrasion. Nickel coated nozzles have more corrosion resistance and lower coefficient of friction, which allows slicker feeding of material and delays plastic adhesion to the nozzle's surface.

Different nozzle sets for different materials

We recommend you to have several sets of nozzles because:

• Using different materials with the same nozzles causes deposit build-up inside the nozzle.
• These deposits will cause blockages.
• We recommend changing nozzles when changing materials.

Recommended Materials

PLA, ABS, HIPS. PC. TPU, TPE, Nylon, PETG, ASA, PP, PVA

Printing of abrasive materials is not recommended. For technical and abrasive materials we recommend to use other nozzles in our range. First version of the CHT nozzle that came out is brass with nickel plating. Later Bondtech is preparing harder versions.

Printing recommendations

Nozzle orifice diameter and temperature have a positive impact on increasing the melt capacity of a hotend.

For high flow applications using standard inlet geometries with this setup, the 0.8mm orifice diameter is the sweet spot.

The change from standard to CHT inlet geometry has a significant impact on the growth of melt capacity and it is very scalable with no specific sweet spots identified on what regards to nozzle orifice diameter.

The heated bed has a positive impact on the reliability of the extrusion, especially on the lower layers. This effect can be used to push higher the Volumetric Flow Rate on low and flat parts.

How to Increasing Melt Capacity with 3 key nozzle features

Selecting the right nozzle orifice diameter for a specific application and using the CHT inlet geometry is the starting point. On high flow applications, where the limits of the hotend are reached, overshooting the nozzle temperature above the manufacturer’s recommendation is also required to compensate for the additional intake of cold material into the hot block and nozzle.

The right combination of these 3 factors will push up the current limits of the hotend, and the gains can be very relevant and even surprising.

Volumetric flow comparison

 Product properties:

• Nozzle diameter: 0.4 mm
• Filament diameter: 1.75 mm
• Color: silver
• Material: plated brass
• Thread: M6
• SKU: 600-C-CHT-MK8-175-60