High Performance Diamond Nozzles
DiamondBack nozzles are designed with the ever-increasing demands of fibre, metal and ceramic filled filaments in mind. We have partnered with Diamondback, a US synthetic brand with over 40 years of experience developing advanced Polycrystalline diamonds for drilling tools, cutting tools, and extreme bearing applications where high abrasive resistance and low friction are a necessity.
With E3D's 10 years of experience developing industry-leading FDM 3D printing extrusion systems, this collaboration brings you the most extreme nozzle solution you've ever seen. Tool-free room temperature nozzle changing of the Revo ecosystem paired with the hardest material on Earth means you can keep your 3D printer operating at total capacity for longer.
Diamond Vs Polycrystalline Diamond
Revo Diamondback nozzles are manufactured from Polycrystalline diamonds, not the typical diamonds you'd see used in jewellery. Traditional diamonds are known for being a single carbon crystal arranged in a specific, repeating pattern, giving the diamond its unique hardness properties. On the other hand, DiamondBacks polycrystalline diamonds are composed of multiple tiny diamond crystals with a proprietary binder that forms a matrix of crystals joined with diamond-to-diamond bonds. Polycrystalline diamonds retain a good portion of the Diamond hardness whilst reducing the inherent brittleness of a single-crystal diamond.
How Are Diamonds Made?
In nature, diamonds are made under extreme heat and pressure. That's no different to the Polycrystalline diamonds used for these nozzles. To put it in perspective the amount of pressure required is equivalent to the entire weight of the eiffel tower concentrated onto a 5 inch area!
Smooth By Nature And Design
Polycrystalline diamond inherently has a low coefficient of friction; leaning into the already low friction nature of the material, the nozzle tip is polished to a mirror finish that provides ultra-smooth layers, providing a built-in ironing-like property that leaves your top surfaces cleaner than ever.
Material Properties
Thermal Conductivity (W/m·K)
Why Thermal Conductivity Matters
Higher thermal conductivity helps move heat through the nozzle more efficiently, improving how quickly and consistently filament reaches printing temperature. In FDM 3D printing, this can support stronger layer bonding, cleaner extrusion, and more reliable flow, especially at higher speeds or with demanding materials.
PCD Diamond offers exceptional thermal conductivity compared with conventional nozzle materials, helping transfer heat into the filament more effectively while maintaining the extreme wear resistance needed for abrasive filaments. The result is a premium nozzle upgrade built for speed, consistency, and long-term performance.
Hardness (GPa)
Why Hardness Matters
Nozzle hardness plays a key role in resisting wear from abrasive filaments such as carbon fibre, glass fibre, glow-in-the-dark, and metal-filled materials. Softer nozzle materials can gradually lose their opening geometry, causing inconsistent extrusion, reduced print quality, and poor dimensional accuracy over time.
PCD Diamond is exceptionally hard compared with conventional nozzle materials, helping the nozzle maintain its shape for longer under demanding printing conditions. This makes it ideal for users who want reliable, repeatable performance when printing abrasive materials regularly.
Thermal Expansion (×10⁻⁶/K)
Why Thermal Expansion Matters
FDM nozzles repeatedly heat up, cool down, and operate at high temperatures for long print cycles. Materials with lower thermal expansion change size less as temperatures fluctuate, helping the nozzle maintain stable geometry and consistent extrusion behaviour.
PCD Diamond has very low thermal expansion compared with common nozzle materials like brass, copper, and steel. This helps support dimensional stability at printing temperature, reducing the risk of thermal movement affecting nozzle precision, flow consistency, and long-term print reliability.
Coefficient of Friction
Why Low Friction Matters
A low-friction, mirror-polished nozzle tip helps molten filament glide cleanly across the printed surface instead of dragging, smearing, or picking up material. This is especially useful for ironing and top-surface finishing, where the nozzle flat needs to smooth the material without disturbing the layer beneath.
PCD Diamond’s exceptionally low coefficient of friction, combined with a highly polished tip flat, helps improve surface finish and supports stronger, cleaner interlayer contact. The result is smoother top layers, reduced plastic build-up, and more consistent print quality over long, demanding prints.
