BIQU H2 Extruder V2.0 Nieuwe Upgraded Dual Gear Extruder 3D Printer Dual Drive Feed Niet vast voor Creality Ender&CR Serie Printers, Geeetech, Anycubic Mega S Printers en Prusa I3 DIY 3D Printer Kits

i have now used this for around 3 months, and it works like a charm, and compared to all the problems the H2 V1 had, then i would say, this is how it should have been in the first place.The good:- Extrusion is always consistant, so my print have not had any artifacts on my prints, not even under extrusion.- The extruder has a lot of torque, compared to my old extruder ( a cnc aluminium mk8 type extruder).- the mounting holes all around the H2 extruder body, makes it very easy to install, or install parts on it, like i did.- the new placement of the screws holding the heatbreake in place is a welcome additon, even tho i havent had any reason to remove it.The bad:- The metal gears can be a bit noisy with fast retractions, but thats just how metal gears are by nature, when they are not submerched in oil like a gearbox.- You can not adjust the tension of the arm, i have yet not found this to be a problem, but this could be a problem for someone wanting to print in flexibles.Over all, for such a tiny direct extruder, thee Biqu H2 V2 is a great option, from what i have experienced so far.

Excellent little extruder, I have one on an Ender 6 and a X5SA, both Core XY and this thing is perfect, no complaints.This thing is small, light and compact and ideal for converting bowden to direct drive.Yes it clicks during retraction but its not noisy, people relatively new to 3d printing are too used to silent boards and quiet printers. It's a mechanical machine people, it's gonna make some noise.

bonne extrudeuses mais la plupart des vidéos de test sur yoube sont certainement sponsorisés par le fabricant car c'est pas non plus le toppour ma part réglage step a 962 et non 932

un calvaire a mettre en œuvre! et le filament fond dans l'extrudeur.

Update: 1 year laterI see quite a few negative reviews of the BIQU H2 V2S (not the Lite version). After about 20kg of various PLAs my unit is still functioning well. The gears aren't worn. It still grips the filament as it should.What's changed since my original review?- Second Z-axis lead screw + stepper- Switched from Marlin to KlipperStill a 5 star product. Clearly, your mileage may vary. For me, I'm glad I bought it.Original review:My Ender 3 printers are almost stock. The only things I've upgraded I printed myself. Namely, I printed a better spool holder, and a filament guide. I also use glass or FR4 as my print surface. The Ender 3 (original) has performed nearly flawlessly for a few years.So why did I buy this upgrade? I have had 4 particularly annoying spools of PLA. About every 3 feet the filament would snap - it was oddly brittle in those places. The Bowden extruder didn't help matters. That's it. That's the whole reason for the upgrade. I just got annoyed having to dislodge the piece of filament in the Bowden tube, and feed it back in again.I had to pick a direct drive because I want to have as little fuss reloading filament as possible. The H2 weighs only 216g, which was important because I wanted to drift as little from the original extruder setup as possible. Direct drive extruders are, by nature, heavier. All I had to do was print a mounting plate and a new part cooling duct and wire it all in.I've seen a lot of reviews about this particular extruder that go all crazy about balance and instability because there are only two screws holding it on the mounting plate. For my installation these criticisms seem to be conjecture, and unfounded. The H2 extruder performs perfectly fine after tuning your settings (more on that later). There is also criticism about the gears, the bearings, the metal used, and on and on. All I can say is, it works as advertised. I can attest to it functioning well. Maybe those armchair metallurgists are right and this thing will wear out after a while. For now, it works.About those settings. I use Ultimaker Cura as my slicer. If you're going from the Bowden extruder to this direct drive extruder, you're going to want to change a couple of settings.Outside of Cura, you're going to have to update the extruder steps/mm. From the LCD:Configuration -> Advanced Settings -> Steps/mmFor this extruder, it's 932 steps/mm.Don't forget to save the settings from the LCD - under the Configuration menu.In Cura, Under "Travel" (see attached image):Enable Retraction - checkedRetraction Distance - 0.5Retraction Speed - 5.0+ Retraction Retract Speed - 5.0+ Retraction Prime Speed - 5.0Minimum Extrusion Distance Window - 1.0