WINSINNDual Gear Extruder, Works with Creality Ender 3 CR10 CR-10 Pro CR-10S Tornado Upgraded Aluminum Drive Feed for 3D Printer 1.75mm Filament

Excellent piece of upgrade for ender 3 or 5+. First item drlivered faulty but seller replaced and all works fine. Good seller to trust.

La mia cr10-max si è divorata il suo estrusore in alluminio.Ho comprato questo,è arrivato in un giorno,l’ho montato e stampa perfettamente.La fattura è identica all’originale,potete anche usarlo come upgrade su altre macchine.Super consigliato!

Works better than stock and MUCH less hassle than the full geared drives I have. I grew so tired of the time and effort to change the filament with my full geared drives and this loads easily like the stock drive only with two drive gears. You have to change the e-steps as the drive is a little smaller than stock. Being a little smaller diameter is nice as it adds a little torque to help push the filament through the printer. I have the CR-10 S4 and had to change the extruder e-steps from 100 to 139. Was very easy to update the firmware now that Creality is posting the firmware on their website. Look under configuration around line 589 and change the 100 to 139 and upload to the printer. Also moved the extruder from the printer frame to the control box as I noticed putting pressure on the x-axis track was trowing the two z-axis motors / rods out of sync. Some have complained of the finish of the drive but all three of the drives I got were very nice. Now using these on a Creality and a Tevo.On a side note; There are no instructions but it did come with all the correct screws and the yellow/orange spring does fit exactly on mine. I did have to put a bit of loctite on the set screw in the stepper gear. There is only one set screw in the gear, it is very short and has a tenancy to back out every few hours or printing. Very happy with them so far.Note; for the tevo tarantula I changed the extruder e-steps from 100 to 138. I am using the updated Merlin firmware in the tevo. The changes are 'around' the following lines ( I removed and added some settings so your actual lines numbers will be close but not exactly the same as mine)...984 #if ENABLED(DUAL_EXTRUDER) 985 #define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, Z_STEPS, 138, 94 } // change from 100 to 138 for dual gear extruder drive986 #else 987 #define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, Z_STEPS, 138 }988 #endifHope this helps...March 2021 update;Been using three of these for a few years of HEAVY use and still love them. I have looked at a few other reviews that complain of the DRIVEN gear self destructing. Some things to consider… the DRIVEN gear is FIXED in place (no adjustment) and the bearing rides on a threaded screw (not ideal). You HAVE to leave the DRIVE (motor) gear loose and put a piece of filament between the gears to align the DRIVE (motor) gear to match the DRIVEN gear. Make sure the DRIVEN gear is centered on its axle before you LOCTITE the set screw on the DRIVE (motor) gear. If you do not do this, the DRIVEN gear will rub on the frame like the ones in the other reviews. Also, DO NOT OVER TIGHTEN the DRIVEN gear axle screw. You WILL bend the frame and squeeze the DRIVEN gear. ONLY SNUG the axle screw LIGHTLY and LOCTITE it! After dozens and dozens of rolls of filament I’ve not had any problems. Even had excellent results with NijaFlex.To the manufacturer…. PLEASE change out the threaded screw you are using for the DRIVEN gear axle with a proper screw with a shoulder for the bearing to roll on. I’ve not had a failure yet but that is the only weak link in an otherwise great design.UPDATE 01/29/22Just ordered my SIXTH for a new Ender 3 MAX. Still have the original one I bought in 2018 and after dozens and dozens of rolls of filament is shows no sign of wear.I cannot stress enough... YOU MUST PERFECTLY ALIGN THE GEAR THAT MOUNTS ON THE STEPPER MOTOR !!Leave the stepper motor gear (DRIVE GEAR) loose. Put a short piece of filament between the gears to help align the gear. THEN LOCTITE and tighten the set screw.The gear on the arm is NOT adjustable and will rub, wear and fail if the stepper motor gear is not PERFECTLY aligned.Other than that;All the parts I have received over the years all fit and were correct.The latest one (01/29/22) now has a NON-threaded spring tension collar that looks custom made as opposed to the RIVNUT the older ones used. Both work but the new collar looks nicer.This newest one also has the M3 screw pictured that is NOT threaded all the way so the bearing does not have to ride on the screw threads.Had great luck running NinjaFlex with these.

I bought this in 09/2021 and over the course of 2 years of intermittent printing, the gear teeth wore down. They now skip and don't extrude consistently. It was good while it lasted, and great value for $12-15. Just keep an eye on the teeth and look for metal splinters. That's your cue to get new gears or replace the whole assembly.

Schnelle Lieferung genau was ich wollte weiter so vielen Dank

Anyone who's bought one of the older Ender 3 (got a Pro myself) will eventually learn how notoriously unreliable the plastic extruder is.If you want a little bit extra, this extruder will serve you well... as long as you're prepared to make sure it will.The two big issues I've had were - first, the stock stepper that most Creality extruders come with have a snub shaft. This extruder does not take that into account. You'll want to buy a stepper with a standard length shaft. Not the fault of the extruder per se.The second - once again not particularly the fault of the extruder, more of a design flaw with the model as a whole - inevitably, undeniably, the gear teeth on the idler wheel can, and will start eating into the aluminum arm of the idler arm, leaving a fine aluminum dust all over your stepper. I haven't had major issues with it for the most part - but people report that this dust can damage stepper motors if it gets in the wrong place. And over time it may cause a misalignment of the gear. The fix for that involves grabbing an abrasive - dremel kit, steel file, sandpaper if that's what you have. Grind down the area where the gear lies, and grind it enough to create space to add a steel washer underneath the idler gear.Once that's done, and obviously you've recalibrated your e-steps to take into account the new hardware, it's a very functional extruder with plenty good grip. Served me well until I upgraded further.