BIQU H2 V2S Extruder

This is the most put together system I have yet to try. With very little tinkering I was able to get this configured and printing at relatively high speeds and quality using the provided information and datasheets. I have around 500hrs of print time, and I have not had a clog, skipping, or wear. The filament path is pretty optimized and can print even 65 shore hardness tpu with ease. Speeds are good with a volumetric flow of around 15mm3/s The fan is seriously silent and I haven't had an issue with heat creep. The entire thing is metal and even after a few bed crashes it is still holding strong. The m3 holes allow a ton of mounting options for all the accessories you can want. There are a ton of mounting options on thingiverse and community designing almost any attachment. Overall a very reliable and easy to install design with plenty of community support and good speeds

This is in kit form. It comes with the components that allows it to be used on other printers, Like the Tronxy brands of 3D printers, but is the best choice as a spare for the BIQU B1 printer and what my primary reason for getting it. In order to keep my printer up and running, I like to have a spare print head ready to go. All in all this is a good product. No instructions with it, but you can use the ones from the original printer that can be downloaded from their website. Well worth a full 5 stars.

This is my third biqu direct drive extruder, the previous two being h2's. Excellent packaging. The material quality has improved. It tangled the filament. I don't even know how the design could do this. I've never seen this happen in any extruder. It's almost comical.

Update: 1 year later I 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 Klipper Still 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/mm For 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 - checked Retraction Distance - 0.5 Retraction Speed - 5.0 + Retraction Retract Speed - 5.0 + Retraction Prime Speed - 5.0 Minimum Extrusion Distance Window - 1.0

I have had this extruder for 19 days and have been printing most of those days. Results have been great but a few minor negatives: 1) I had a problem with the gears slipping after just a couple minutes of use. Luckily, this issue was noted by some YouTubers and the problem was fixed by loosening then re-snugging the case bolts, since they appear to be over-tightened at the factory. 2) The nozzle and bi-metal heat tube were not properly tightened together, resulting in oozing filament -- fixed by properly tightening them. 3) The cable that plugs into the Ender 3 is not one-way. The instructions I followed from a YouTuber resulted in the plug installed the wrong way. Either that, or the cable was faulty... not sure because I ended up lengthening the cable that comes with the Ender 3 Pro and then it worked fine. BIQU Support responded after a couple days but they were no help... just told me to plug positive to positive and negative to negative... lol, if only I knew which but the board isn't labeled. Now that it's working, I am very happy with it. Results are much better than the factory Bowden extruder or the dual-drive extruder that I had previously upgraded. I ordered a second BIQU H2 directly from BIQU for my AnyCubic Mega S. It was slightly cheaper but I wish I would have ordered again from Amazon because it's taking a lot longer from BIQU. My only other concern is that I haven't been able to find silicone socks to fit the heat block and the sock that came with it is already tearing apart and falling off sometimes. I probably just need to look again.

i am really pleased with the BIQU H2. i was worried when i ordered it do to older reviews but do to it being a direct drive. i thought i give it a go. i am coming from a spider 3.0 hotend and it was hell to have. as soon as i installed this new drive it worked right off the bat. its fast and easy to run and takes away from all the other stress when calibrating the printer. cons you have to print your own bracket. and parts or hard to find. can not find a temp nozzle nowhere. and i tinted mine up to much and gives off bad readings. 500c temp thermostat should be sold by them as replacement parts but they do not have it. ? other then that. this thing is sweet

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 top pour ma part réglage step a 962 et non 932

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

After spending 3 months up and down with this extruder on my Ender-6 I decided to throw it to garbage and buy something proper like bondtech. This extruder so badly made that the motor is not aligned with gears and causing a grinding sound while retracting. The second issue I have is filament get stuck in the nozzle and forcing me to disassemble the whole thing. Overall I only had like 5 hours of print and wasted days of repairing this extruder. Avoid this extruder at any cost if you don't want headache and go for something else.