TWO TREES® DDB Extruder Transparent Version Dual Drive Extruder for 3D Printer
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the extruder is good but i had problems with mounting it to ender 3 pro. the one side was in the contact with threaded rod and was jamming it so i had to trim one side as shown in the picture.
Incorporating problems, moving forward. Good luck. To my needs, the best 3D extruder. In demanding packaging, it arrived quickly. Good quality product. My mechanic says it's the best 3D extruder.
excelente servicio
It came on time and okay.
Product arrived as described. Packaged very well. No damage to product. I purchased this item specifically to convert 1 side of my Mankati 3D printer to print with 1.75mm flex filament. Now I can print with 3mm and 1.75mm filament. The extruder mounts perfectly to a nema 17 stepper motor. This extruder can work with flexible filament. When I first used it I had to change the e-steps value. Because this item is transparent it helps to see any problems. When I tried my first print the flexible filament was escaping between the rollers. After some trial and error I found that the original spring is too strong/stiff. NOTE: IF YOU WANT TO PRINT WITH FLEX FILAMENT YOU WILL NEED TO CHANGE THE SPRING. I used 2 springs from a bicycle quick-release skewer. These springs have much less strength than original spring. See photos. These worked perfectly. After some tuning of print speed and flow the print quality is excellent. Using the existing spring I expect that this extruder will work very well. I will continue to use the extruder with the new springs. Banggood, I would recommend you supply a weaker spring; maybe half the strength would be ok.
Super replacement on my tevo tarantula pro
Received in good order have yet to test.
Working perfectly.
works well, but be warned if you want to install on an Ender 3. It doesn't fit the Ender because the lead screw gets in the way. You can use a file or grinder to file out a piece of the extruder's case so it fits, but it's quite some work. In the end it's worth the effort, it will help you achieve faster printing speeds with no underextrusion due to the printer skipping steps. It was a bit noisier than the stock extruder when using linear advance and fast printing speeds, but this can be sorted out by adjusting the "screw" that tensions the extruder gears
Seems to be working okay, not sure how to take it apart in order to fix it directly on top of the hotend with groove mount, might not be possible without breaking it. Other than that, it's fine.