UniTak3D Ender 3 BMG Extruder Dual Drive Bowden Extruder High Performance Ender 3 V2 Drive Feeder 3D Printer Accessories for Ender 3 V2,Ender 3 Pro,CR10,I3 Mega,Chiron and Other DIY 3D Printers

Having tried several other extruders this one was by far the easiest - not least because it came with very decent printed installation instructions which I classify as being very professional. Wheras the extruder in my AnyCubic Mega S was a pain in the rear end for loading filament this replacement made filament swapping a piece of cake.The only downside for me was that after installation the filament fed in the wrong direction - which wasn't a problem to rectify by swapping over 2 wires to the extruder motor (search for instructions on the Internet on how to do this). However this feeding situation wasn't a fault of the extruder - it just happens to be a minor configuration issue with my 3D printer.Of all the toys I've bought for my 3D printers over several years this add-on is head and shoulders as the best. It's easy to install and works out-of-the box. Well done to the designers - they've brought a great add-on to market.

I have bought it for mega X.No installation instruction inside.Kept on jamming, hence doubled checked and gears were misaligned.Manually aligned them but again, just kept on jamming randomly.The plastic gear was not moving uniformly but wobbled, which probably cause the issue in the first place.If you tightened the screws to the motor it completely jammed it, hence 2 screws had to be loose.One might say, you get what you pay for but the item is just bad quality.

Bought this to go with the unitak ender 3 direct drive bracket for an ender 3v2, both were easy to install and once I'd re-calibrated the machine (esteps: 415, retraction: 1mm, Z-offset... ), the print times were reduced and the print quality is superb. All in all, I would thoroughly recommend this combination, especially if you're on a tight budget.

Good but 1 screw doesn’t line up otherwise very good

Bought for my Anycubic i3 Mega. It did not fit on to the stepper motor without some pressure and, consequently, the gears were not in line. I should have returned it but tried to 'ackle' the holes a bit and failed, so bought a different one.

works 100 times better than original

Very good quality and quite easy to install fitted straight on my ender 3v2

Best place for this is in the bin. Build quality is terrible, casing didn't line up with pegs, screws don't line up with stepper motor. Total junk!!!!!

Se requiere algo de paciencia para su instalación, es buena con mucha fuerza, empuja el hilo Pla continuamente sin problema, solamente se tienen que calibrar los pasos 415 mm por minuto para obtener un buen resultado o dependiendo del tipo de impresora

No issues. Instant improvement on my ender 5. Not perfect(a smidge tight at first)but great for the price.

The actual extruder seems decent, but it is nearly impossible to actually get it to load the filament through it and into the Bowden tube. I only successfully managed it once, and then it caused several issues with the actual extruding where the filament would get stuck and I’d have to push it through while printing to get it to work again or I’d not be getting anything out of the nozzle.It also barely fit on my Kobra Max, and I had a super hard time aligning the screws with the stepper motor.Not worth it, save your money and buy something else.

First off, this extruder design is one of the best ever on the market. This is a copy of the original BMG, and the reason for the great price. The design is solid and works extremely well compared to other extruder designs.Fit and finish of this unit is good. The drive gears grip the 1.75mm filament well. Even the flexible types of filament, like TPU are driven well.What you need to know. If you are upgrading your current extruder, like the one on any of the Enders, you will need to reverse the stepper motor's direction. This can be done by swapping to of the wires on the plug going to the stepper or through the firmware. Some of the printers allow the changes through the display menu as well.You will also need to edit the e-steps of the stepper motor. The best way to do this is to run a calibration test by asking the extruder to output 100mm and checking that it does in fact output what was asked. There are many YouTube videos that explain this process. It is well worth doing.All in all this is a great product that comes with most everything you need to switch. Wrenches and screws are provided. The instructions however, not so good. There is plenty of help on the web if you do a little bit of searching. I believe this product is well worth a full 5 stars.

The 2 half of the shell didn't alright properly so it required filing on one side to get it to mate with my v6 hotend. After all that the arm flexes under the spring load when disengaging the gears to load/unload filament because of the cheap plastic it's made out of. It's functional but bad quality which I guess you get what you payed for but I recommend just paying the extra 10$ for a higher quality bmg clone.