Redrex Dual Gear Ender 3 Extruder Metal Drive Feeder Upgrade for Ender 3 V2,Ender 3 Pro,Ender 3 Neo Series,Ender 5 Pro,Ender 5 Plus,CR10,Vyper 3D Printer TPU Filament Support(Motor Shaft>21.5mm)

Had my ender 3 v2 for about 3 years, and suddenly mid print the printer stopped feeding filament into the extruder properly. It made the print very fragile and much less dense. I noticed that if I pushed the filament into the stepper motor it would print normally, but as soon as I stopped manually feeding it the print would become fragile again.I disassembled the stock part to find there was a crack in the plastic and it want pinching the filament correctly while feeding.This replacement is much stronger, made from metal, with dual gears for gripping the filament. Easy swap out, takes about 5 mins, and immediately fixes the issue. Good price and good quality.

Solid little package. Instructions were less than obvious on how to put it all together but it wasn’t too complex in the end. Great care is needed in alignment though to make feeding new filament work.My printer has klipper installed and it was easy enough to calibrate the extruded. The filament comes out with fine even and clean teeth marks on two sides. Made a clear difference from the plastic stock extruder.

Got this to help with consistency.If you are mounting it on top of motor as I didAfter running for some time “ on PETG l found that the feed wheel was skidding.It took me a few attempts befor I realised that the unit was worming up due to the stepper motor running at 140 steps per inch instead of 100 Steps.I resolve the problem by creating a small heat brake under the feed mechanism.Ps I am running in an enclosure!

I recently upgraded my Ender 3 with the Redrex Dual Gear Ender 3 Extruder Metal Drive Feeder, and I must say, this upgrade has been a complete game-changer for my 3D printing experience! The quality and performance of this extruder upgrade have far exceeded my expectations.First and foremost, the dual-gear design of this extruder provides superior grip and control over filament feeding, resulting in smoother and more consistent extrusion. This has significantly improved the overall print quality of my Ender 3, allowing me to achieve finer details and cleaner prints with ease.The metal construction of the drive feeder not only adds durability but also enhances the reliability of the extruder, ensuring long-lasting performance without any issues. I can now print for hours on end without worrying about filament slipping or jamming, thanks to the robust design of this upgrade.Installation was a breeze, with clear instructions and a user-friendly design that made the process smooth and hassle-free. Within minutes, I had the Redrex Dual Gear Extruder installed on my Ender 3, ready to take my 3D printing projects to the next level.Overall, I highly recommend the Redrex Dual Gear Ender 3 Extruder Metal Drive Feeder upgrade to anyone looking to enhance their Ender 3. The improved performance, reliability, and print quality make this upgrade a worthwhile investment for any 3D printing enthusiast. Upgrade your Ender 3 with this extruder, and you won't be disappointed!

Couldn't quite put my finger on why I was not getting good results with my prints, then I watched a youtube video on how this could possible be the cause. So, purchased this with the stepper motor (glad I did) and fitted it with little effort (while watching a 'how to' video on youtube). Instruction that are included are not good. The thing to bear in mind is that you must calibrate it once finished and this process is straight forward but, does take a few minutes to achieve good results (the video I watched was by 'Casual DIY'). I have had much better prints since fitting this. It seems to be very well made and has been accurately manufactured to fit, all presented in good packaging

TLDR; works great on FLSUN Q5 after upgrading A4988 driver.I took a gamble to see if this would work for my FLSUN Q5. I wasn't a huge fan of the default Titan (like) extruder. It would often fail to grip different filaments and I was constantly adjusting it.The gamble has seemed to pay off. This fits perfectly!However, after fitting I found the stepper motor would slip significantly, even after calibrating E-steps, making an awful noise. No amount of checking the bowden tube, adjusting print speed, feed/flow rates seemed to help, unless I went very slow. So, I had the genius idea to check the Vref on the A4988 driver as it simply wasn't keeping up. Thankfully, I forgot to put on my glasses and accidently shorted it. This meant I needed to order a TMC2209 replacement driver. I used the BIGTREETECH KINGPRINT TMC2209 v1.2 which work great.After putting on my glasses, I dialed the Vref to 1.273 Vdc giving 0.9 Amps as per stepper motor spec. Note: This is very close to factory default, so you could just drop these in. I also insulated to Vref/Diag pins as they're pretty close to the capacitors on the MKR Robin Nano v1.2 board in the FLSUN Q5.After calibrating the E-steps I got approx. 147, slightly higher than the 100-139 specified.End result is a super quiet, smooth and consistent extrusion. So, I am pretty pleased so far.

Terrible! DON'T WASTE YOUR MONEY!I'm working with an Ender 3v2.Bought it to replace one that started skipping. This lasted a couple of weeks before it failed and started skipping. The fit wasn't great, couldn't put the knob back on as the gear had to be right at the top of the stepper rod.