Bigtreetech Upgrade Dual Gear Extruder, Double Gear MK8 Extruder 3D Printer Dual Driver Stock Feeder All Metal 1.75mm Filament Extruder Kit for CR-10S Pro/CR-10/ Ender 3 V2/Ender 3/Ender 3 Pro Series

I have 4 BIQU B1s and installed these on 2 of them so far. I plan to do the other 2. These are a really solid upgrade. For the BIQU B1, you need to be aware of a couple things:- The esteps will need to be changed. Mine defaulted to 98 on the old factory extruder. (That resulted in 105mm instead of 100mm extruded by the way). The correct estep value for these is 136 for a BIQU B1. You can set this via gcode using "M92 E136" then issue a save with "M500". You can also use the "save to eeprom" in the BIQU B1 menu to save. If you're not comfortable entering console commands you can use the tuning menu in the BIQU B1 and do the calibration then ignore the measurements and just increase the esteps to 136. After that, make sure you use the "save to eeprom" option.- Some slicers add esteps to the gcode. The ideamaker app that comes with the BIQU B1 does this. So you'll have to edit the printer config and go to advanced and change it from 98 to 136. You can open the gcode files with notepad or such and search for M92 and make sure it's E136 not E98 in that file.- You can alternatively do none of the above and only change the value in the gcode from M92 E98 to M92 E136 but this requires editing each gcode file after saving it.- Finally, the printer's filament sensor will be slightly too low when installing the new extruder. Ideally you need a couple more 1/4" spacers and a couple longer M3 screws. What I did is unscrew the two screws on the filament sensor and move it to the left so that the right screw went into the left hole on the holding bracket. Then I just used the right screw to hold the sensor in place. This moved it to the left almost an inch and the filament can bend a little and it works with no other spacers. A better long term solution will be to get some longer M3 screws and print a couple extra spacers. But it's been working as I set it without any additional parts.

This is a super easy upgrade to your Bambu p1s printer that allows you to swap nozzles as easily as you swap filament. No more changing out the entire hotend for a .2, .6, or .8 mm nozzle, instead buy this upgrade and purchase revo nozzles that you can swap in 30 seconds. No connectors to unplug, no tools, just use your fingers to remove and replace the new nozzle.I swapped my stock hotend. It took longer to recalibrate the printer than it did to install this upgrade.The 1st print after the upgrade was perfect.

This nozzle just clogs constantly and so badly I have to disassemble the whole extruder to get it working again. I tried upgrading the nozzle to a $60 obxidian nozzle...same thing. This product is a waste of $140 and I can't return it because the box is gone. I exchanged it for a new one and guess what...same issue. On top of the $140 I wasted, I wasted an additional $60 on the new nozzle, $40 on another replacement nozzle trying to see if the nozzle was the problem, $100 on a new all metal extruder gear box and assembly, and no matter how much new upgraded tech I throw at this POS, it simply refuses to work. I run a business and this thing has wasted countless hours with failed prints where the nozzle just prints in mid air once the nozzle becomes hard clogged, rolls of filament, and hours of disassembling and reassembling the extruder to remove the clogs.In short, this company needs to go out of business. The product is awful and I am stuck with metal paperweight because I have no way to return it.

I was very skeptical on buying a BIQU nozzle due to the negatives people talk about but in all honesty i really love this nozzle. Its everything bambulabs should have done when they decided to make 3d printers a fast, easy switching nozzle that you can unscrew with just your hand. Ive only had a few days to play with it but it has given me quality prints, it has a good flowrate too and it is a little pricey but I believe its worth it in the end

To get it out of the way first, yes, as everyone else has mentioned... No instructions. However, if you pay attention when you are removing your old extruder, this is a straightforward process.I have been trying in vain to get a large nozzle (1.0 mm) to work on my ender 3 pro for rapid drafting. The stock extruder laughed in my face and skipped like a record when I tried to print with the 1 mm. I installed this extruder, not really expecting that much of a difference, but I had tried every other suggestion for fixing extruder skipping. Slowed the print down, adjusted up my zed offset, changed stepper motors, checked stepper voltage, all that crap.Long story short, I installed this guy and have run a few tests. I started with a layer height of .6 at a print speed of 30. No problemo. I was surprised. So I jumped it up to the .8, same speed. No issues. I went bananas and jumped it up as far as I could possibly need it to go: 1 mm layer height at 50 mm/s (my usual speed for PETG).I'll note here that I ran it at a 1.1 layer width as well.Holy crap, it ran it no problem. You can watch your spool as the life drains out of it at that height and speed, but it does an amazing job now. Just from the extruder change. Buy it. Buy it now.BTW, you can do a layer height the same as the nozzle, but you need to know how to set your slicer. Most people recommend no more than 75 - 80 percent, and that's perfect if you don't want to muck around too much.