BIQU H2 V2S Extruder für B1 BX Ender 3/3 V2/5/6 CR6/10

BIQU H2 V2S Extruder For B1 BX Ender 3/ 3 V2/5/6 CR6/10

This was my first hot end replacement after upgrading almost everything else but the printer's frame. I am very glad I chose the H2 V2S.

While waiting for delivery I was able to adapt and print the parts I needed to attach it to my Voxel Aquila X2. In the end I replaced the Aquila X-carriage for a stock Ender 3 carriage as that gave me access to more proven starting designs for the mounting plate.

All the bundled electrical parts seem to be of quality, the the heater cartridge leads were already crimped which was nice to see. The H2 V2S mechanical design is beautiful and so compact, I was amazed at how small it was once it was in my hand. The manual gear operation is smooth it shouts quality. The filament release has a satisfying click. In operation it is silent with the occasional quiet click of retraction (when retraction is set to at 0.5mm @ 5mm/s - my bowden setting of 45mm/s makes it a bit chatty :) ).

I really like the consistent 3mm mounting holes all over the H2 V2S and its symmetric geometric design, it makes designing accessories easy. I've secured it to the backplate from the top and back to help minimise flexing of the PETG backplate. By the way, the dimensioned drawing has some missing y-plane dimensions for the nozzle - I want to redesign my cooling duct and this would really help.

I was initially concerned about the 35mm fan not cooling enough and making too much noise but I was very wrong. Even in my longest print so far (4hrs @ 240deg PETG) there has been no sign of over-heating and it really is virtually silent - well done BIQU! (I say that as someone who replaced all the stock fans on their printer so I can share the room with it). I've initially chosen a 5015 blower with a three pronged duct as a part cooler and that is the noisiest part of my printer now but it is still very acceptable and it gives good results up to 70-degree overhangs. Most of the noise comes from the blower's narrow ducts so I'll experiment with other designs.

My printer's cable runs are a bit longer than a stock Ender, another 20cm on all cables would have been great but the installation was straight forward. I rerouted cables to get enough length for the head to reach full z-height and still get to the far right x-axis. Initially frustrating but not a big deal in the end. I would have liked the stepper motor lead to be terminated with a locking connector (HS?).

With the BIQU H2 V2S I've only just begun pushing speed but already I've achieved 100mm/s on everything. There is more speed to be had, 200mm/s gives very acceptable results but I think I need to upgrade my part cooling. The 100mm/s benchy was my best ever, the 200mm benchy was way better than my printers's original 60mm/s. I've printed about a dozen things so far (in PLA and mostly PETG) not a single issue with the H2 VS2 and all came out with better quality than I am used to.

BIQU H2 V2S Extruder For B1 BX Ender 3/ 3 V2/5/6 CR6/10

I am happy with the received product and hope to get it installed and working on my CR-10v2 very soon. The CR-10 has been converted to linear rails on Y and X and this extruder will be mounted on a Hermit Crab.

Nice quality as always