Redrex Ender 3 Upgraded Aluminum Bowden Extruder with 40 Teeth MK8 Drive Gear for Creality Ender 3 V2,Ender 3 Pro,CR-10 Series and other Reprap Prusa 3D Printers

The Redrex Aluminium Bowden extruder upgrade is a really in-expensive and straight forward upgrade from the stock plastic extruder that comes on the Ender 3d Pro, which was the printer I bought this to fit. It`s red powder coat looks cool too and breaks up the black.Please note this kit is upgrade for the extruder part of the motor and does not come with a motor.It came with clear instructions and can be fitted using the tools that already came with the Ender 3d pro so no extra equipment required. It took about half an hour to remove the old one and fit this one. there was only I snag. The feeder gear on my motor is pressed on, unlike older ones that are held in place by a grub screw on a flat surface, so it could not be slid off so I did the upgrade but did not use the brass gear supplied with it nor did I need the metal bracket on my printer. the filament outlet on this part is also upgraded from brass to steel which should also reduce wear and friction.The plastic extruders are known to wear quite quickly and on occasion break when the lever is compressed to release the filament, this upgrade is sturdy and eliminates the chance of that happening all in all a good upgrade that will only enhance future printing.

I thought whilst I needed to replace the bowden tube on my Ender-3, that I'd also upgrade the extruder to something more durable, especially since my wood PLA was starting to wear away a notch into the plastic extruder.This was fairly easy to install, and comes with replacement parts for the extruder and gear. The new extruder seem to be good quality and looks nice.My only tip for people looking to buy this is to not overtighten the screws when installing this, as it's very easy to strip the threads.

This extruder is well build. It was easy to install. It feels strong so hopefully won't break like the old plastic one.I upgraded to this extruder because my old one broke after a few months of use. Anyhow, with this new extruder I am currently printing non stop PLA, PETG and TPU with no issues whatsoever. As a plus for me is that it was so easy to install and no calibration of my esteps was necessary (similar gear system with original).All in all a great purchase and well worth the upgrade!

It's obviously an improvement over the stock plastic extruder, which was starting to wear out due to filament abrasion. Note that this unit does place the filament hole even closer to the z-axis leadscrew although it doesn't quite touch, so sleeving the leadscrew to prevent grease contamination of the filament might be a good idea (I used a small piece of the plastic tubing it came packed in with the original printer kit.You do need to put two small screws in to hold the spring - the plastic stock extruder has locating pins for this. Two of the small countersunk screws seem to be best as the heads engage with the spring nicely to hold it stably in place. I used the existing gear and idler from the stock extruder rather than the ones supplied, since they seemed identical.Giving it 4 stars only because showing all pics with the stepper included is misleading some purchasers. I didn't expect or need the stepper but it should be clearer what's actually being supplied. Note that you do also get an angle bracket for mounting a stepper - not needed for the Ender 3 since its obviously already mounted.

Fantastic investment. The stock unit is plastic, and brittle. I snapped mine from changing filaments. Not only does this come with all replacement parts needed, it also provided an uprated spring. Fit and finish is perfect, nice hard anodized finish adds some colour to an otherwise all black unit. Installation is a bit fiddly but follow the images in the photos above and it's easy enough!Thoroughly pleased - having had 5 failed prints, installed this without changing any settings, and its back to how it should be.

I purchased this to replace the broken plastic extruder on my CR-10 and was essentially just looking to have the machine back in action again. This arrived complete with a number of accessory parts including a much stronger bracket than that which was originally supplied. The pieces went together well and were an exact fit for the machine. I hadn't particularly purchased this as an upgrade but the supplied parts - especially the sharper 'cog' have really made the machine feel like new. This has given my prints a real quality boost which was unexpected and I'd certainly underestimated the difference that this would make. This is a really good kit at a very good price. Buy one.

Started to get poor 'blobby' 3d prints, it turned out that the original Ender 3 extruder was slipping due to the extruder being made of plastic and cracking. This metal extruder fixed my problem.

It seems of a reasonable build quality overall.One problem I have is that the spring is held on by a screw in each side. The spring fits over the screw.However, unless you leave the screw loose on one side, the spring will only fit over the head of the screw, and that's not enough to keep the spring in place. I think I can fix this by padding the head with a couple of M3 nuts, but you shouldn't have to do that.I would also like to have seen included in the pack a hex wrench for either the gear or the bolts (or ideally both), but again this isn't a show stopper.Seems to work OK with a reasonable pull on the filament. Not an upgrade but an OK replacement for the stock extruder on my CR-10s.