SIMAX3D Dual Drive Geared Extruder BMG Extruder Bowden for Creality Ender 3 V2 Extruder Anycubic 3D Printer Upgrade

I have a 5 in 1 out Diamond Full Color nozzle. I did not want to pay $60 each for extruders back when I got this nozzle so I made my own. I've never been able to get good results from the nozzle with those. I saw these clines and figured $15 each was a fair price to see if they work. They work incredibly well!My home made extruders never were consistent and broke quite often. These clones are solid and smooth.My home made ones needed 1.5 amps from the drivers. With these clones I was able to cut that in half.My home made extruders were loud. These are very quiet.I am not sure how long they will last, but if the bearings are the only thing that go out (read a lot of reviews about that), I can easily replace them. I lubed everything with gun oil during assembly.I also needed the filament to feed in from the "bottom" so the end they come out of would be the part that has the removable ptfe adapter. That is another part that will break. I need to be able to easily replace it. The part that the instructions show as the outlet is part of the extruder and cannot be easily replaced. I installed the ptfe in the nipple and then screwed that into the extruder. There is absolutely no play in the PTFE and reduced stringing. I was able to cut my retraction by almost 1mm.These are cheap. Know what you are getting into amd you won't be disappointed.

Unfortunately, the drive gear which attaches to the stepper motor is not correctly threaded for the included set screw. The threads are cut too large and the screw falls through. Otherwise the design looks fine. I attempted to contact the seller through Amazon to let them know about the defect, but the Amazon system did not have the ability. There was no contact information included in the packaging so that leaves me with no option but to request a refund.

Installation was easy and straight forward. I didnt have to do any recalibrations