Geeetech has releases a Prusa I3 M201 that is the 2-in-1-out version of our latest Prusa I3 series 3D printer.
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 The M201 features a newly engineered the 2-in-1-out switchable hotend, that feeds 2 filaments through one nozzle. With the new 2-in-1-out hotend the M201 can work like a color palette, providing a new level of expression with your prints allowing you to create alternating colors, blending color and gradients.
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Unlike other dual extruder printerm you control the percentage of the feed rate of the two filaments for this printer. That is a kind of blending color. The sum feed rate of Filament 0 and Filament 1 is 100%. If you manually adjust either of the two values, system will automatically work out the other value. The proportion will not change unless you change it or choose other printing scheme. Different feed rate proportions can be used in one printing item.

Second, in Mixer>Templates, there are 4 pairs, 8 kinds of built-in gradient templates for you to choose to print items with gradient colors. In this scheme, the feed rate proportion of two filament will vary with the printing process, and the waxing and waning proportion of two filament is reflected on the inform screen, so you can estimate the time duration and prepare for the next templates. For the 8 templates, the greater the number is, the more apparent the gradient color will be. You can use any combination of these templates to generate items with diversified visual experience and making your printed works stand out in those tedious and monotonous models. These printing scheme can be manually adjusted in the menu of Control/Mixer on the LCD control panel easily, the system will be subjected to the latest option as default.