Description
Reviews
| Brand | - |
| Category | Root / Office Equipment, Supplies & Services |
| Origin | - |
| Material | High-Purity Copper |
| Compatibility | CR-10, Ender 3, Ender 5, MK8 Extruder |
| Nozzle Thread | M6 Standard |
| Heater Cartridge Size | 12V / 24V 40W Compatible |
| Thermistor Hole | 5mm Diameter |
| Surface Finish | Polished Copper |
| Manufacturing Process | CNC Machined |
| Package Contents | 1x Heater Block, 2x Screws |
| Weight | 18 grams |
| Brand | Mellow |
Anonymous
Mar 22, 2026
Rating: 4/5
Great product, minor installation note
The block itself is fantastic quality. Just make sure you have high-temperature paste when installing, as copper transfers heat very efficiently. Once set up, it works flawlessly with my CR-10.
Anonymous
Mar 21, 2026
Rating: 5/5
Perfect fit for my Ender 3 upgrade
This copper heater block fits perfectly on my modified Ender 3. The thermal conductivity is noticeably better than the stock aluminum block, leading to more stable temperatures during long prints.
Anonymous
Mar 16, 2026
Rating: 4/5
Solid upgrade component
Good weight and feel to it. Installation was straightforward on my Ender 5. It runs a bit hotter to the touch than aluminum due to the material, so be careful when adjusting.
Anonymous
Mar 13, 2026
Rating: 5/5
Excellent quality CNC work
You can tell this is machined with precision. The threads are clean, and the holes align perfectly with my thermistor and heater cartridge. Highly recommended for anyone upgrading their hotend.
Anonymous
Mar 10, 2026
Rating: 5/5
Superior thermal performance
Copper is definitely the way to go for high-flow setups. This block handles my increased filament throughput without any drop in melt consistency. Worth every penny.
Anonymous
Mar 05, 2026
Rating: 5/5
Solved my temperature fluctuation issues
I was experiencing weird temperature spikes with my old block. Swapping to this Mellow copper block stabilized everything immediately. My ABS prints look much smoother now.
Q: Does this come with a nozzle included?
A: No, this package includes only the copper heater block and mounting screws. Nozzles are sold separately to allow you to choose your preferred brand and size.
Q: What is the maximum temperature this block can withstand?
A: The copper material itself can withstand temperatures well beyond typical 3D printing requirements (up to 1085°C melting point). However, always adhere to the temperature limits of your specific heater cartridge and thermistor.
Q: Is this compatible with a 24V heater cartridge?
A: Yes, this heater block is designed to accommodate standard 40W heater cartridges used in both 12V and 24V systems, provided the cartridge dimensions match the MK8 specification.
Q: Do I need to change my PID tuning after installing this?
A: It is highly recommended to run a PID autotune after installing a copper heater block, as the thermal properties differ significantly from aluminum, which ensures optimal temperature stability.
Q: Will this fit a stock Ender 3 V2 hotend assembly?
A: Yes, it is fully compatible with the stock hotend assembly of the Ender 3 V2, as it uses the standard MK8 geometry.
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