CHPOWER CR-10 Upgrade CR10 z Axis Kit, CR10 Dual Z-axis Upgrade Kit, CR-10 Dual Z axis Lead Screw for CR-10 3D Printer with 515mm Lead Screw & 4mm Motor

First thing - The Dual Z axis motor and lead screw kit is a great addition to my Ender 3 v2. I purchased a Dual Z kit because over the space of less that 2 months after I bought the printer, the screws that attach the horizontal gantry to the Z bracket came loose, despite being firmly tightened during assembly, causing sagging on the right side when the print head was on that side. It also made it impossible to level the bed, and caused a few failed prints before I was able to find the problem. I bought this particular kit because of the customer reviews and I am not disappointed. Quite the opposite, I am ecstatic. Since installing this on my printer I have not had one failed print. Installation was very easy. It fits like the original Z axis and requires only about thirty minutes to install and connect. There was no additional connections to the controller board. The additional stepper connects in parallel with the original Z stepper and apparently adjustment to the motor current is not required. Personally, I'm not sure this is an optimal solution because now I have a slight moan from the Z axis motors when leveling the bed. During normal printing, however, that new moan is absent and so far with many prints after installation I have had no damage to the Z motor driver. Overall, this kit performs well and should be considered a must have addition to your Ender printer.Second, the frame brace kit is also a good addition to my printer. I really hadn't noticed any problems with frame flex causing any problems with my prints but installed the frame brace anyway. It installs easily in only a few minutes and really makes the frame stiff and firm. The only problem I have with it is one I created myself by installing a filament guide on the extruder frame. It is adds enough height extruder frame so that on very tall prints there is the possibility of the extruder contacting the brace causing the vertical travel of the gantry to stop and possibly interference to the x axis. This was easily solved by installing a longer angle bracket for the brace on the left side to extend the distance between the brace and the frame. I only mention this for others who have installed a similar guide that attaches to the extruder bracket.

instructions were understandable, the parts were easy to install and worked as advertised.I saw a definite improvement in the quality of my prints.Warning:Be sure to check the alignment of the threaded rod before you tighten the retaining block at the topof the frame. raise the Z-axis all the way to "400" before tightening the retaining block That will insurealignment and a smooth travel. Silicon lubricant helps too.

Longer LK4 / Alfawise U30 printer owners can use this kit (with a 3D printed adapter), but you also have to make sure you plug the stepper motor into the printer control board using a *standard* stepper motor cable. If you try to daisy-chain the new motor off of the old one, it won't work and will probably damage your printer's control board. THIS IS NOT THE FAULT OF THE SELLER OR MANUFACTURER OF THIS KIT. The issue is that the OEM stepper motors on the Longer / Alfawise printers use a non-standard pinout (or at least that was the case on my printer).The kit arrived well packaged with a straight lead screw (a good thing). Installation was a little bit of a hassle, but that's to be expected with this type of modification. The video (found among the product images) was very helpful in showing how to install it.The only negatives are as follows:1) The motor doesn't seem to be able to handle much current. I had to back it off to 500 mA to keep the motor from heating up too much. This doesn't seem to affect the performance, though.2) The coupler provided for the motor fits the lead screw a bit too tightly, making installation difficult.3) The printed instructions included with the package were incomplete.I would buy this again, if I had another 3D printer that needed it.

The media could not be loaded.  I own an Ender 3 max, and this kit works perfectly. With the help of a YouTube video, I was easily able to install the additional motor and lead screw to the printer and now it is better suited to take the weight of the mounted sprite pro extruder. Although it sticks out a little from the top, this should not be a problem at all.Since the psu had to be moved, i stuck it underneath the printer, although you could most likely print a bracket before installing the kit.Overall a great quality product that I would reccomend to anyone who owns a Max.

Easy to install. Great value for the price IMO. Got this for my ender 3 and Installing it was easy

After spending time installing this and printing an upper rod bearing mount as the included one is horribly misaligned I finally was able to power up my printer, fully expecting the upgrade to a dual z axis to begin working and all I get is a high pitched whine from the motor and the OEM z axis binding. Had to quickly shut down my printer to avoid damage from the defective CHPOWER motor.Not pleased with this. I now either have to disassemble it from my printer or invest in a functional stepper motor to replace this junk.UPDATEAfter going back and forth with messages I was advised to disconnect the OEM motor and reconnect the CHPOWER motor. With this motor only producing a high pitched whine it points to a fault in the internals of the motor, as anyone who is familiar with electronics would know the potential for this motor to backfeed into the circuit board is substantially high enough that doing so risks damage to the main board. As my printer is new and functional I am not willing to attempt such a risky "test".I now have to conclude that A) not only is the motor with this kit absolute trash but B) any tech support is non existent.Please avoid this product at all costs and spend your money elsewhere on a much better product that actually includes a functional motor and upper bearing mount that isn't misaligned to the point you have to produce your own in order for the rod to operate correctly.

Este accesorio ayuda a la estabilidad de la impresora, me parece bien precio y trae incluido todo lo que se necesita para instalarse

Bon produit, conforme à mes attentes installé sur une Ender3 Max. Seul bémol, délai de livraison long, même avec abonnement Prime. Article en stock, commandé le 20 août reçu le 01/09... pas de notice de montage et réglage détaillée fournie.

Good product but no video guide or detailed installation instructions. Have to Google or YouTube relevant products to figure out how to install then properly. However it did fix my x-axis flexing. Much easier to level the bed now.