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Aluminum 0.4mm Nozzle 3D Printer Hotend Kit 1.75mm PLA/ABS Three-Color Mixing Printing Remote Extruder 12 V / 24 V Remote Paper Feeding for Bulldog(12V): Amazon.co.uk: Business, Industry & Science
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2pcs 3D Printer Two-Color Nozzle Double-in One-Out Extruder Hotend Kit Color Mixing 3D Printing Upgrade Module for CR10 LZRONG (Size : 12V) : Amazon.co.uk: Business, Industry & Science
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hotend - What is stopping us from mixing 3D filament colors in an Extruder? - 3D Printing Stack Exchange
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