BIQU H2 Extruder Adapter, optional on linear rails, Sidewinder X1/X2 upgrade

H2 extruder to wheel or linear rail carriage, SWX2 PCB or BIQU EBB42 CAN, Titan extruder to linear rails,Eddy,MicroProbe
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updated March 16, 2025

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Great design. I'm glad I ran across it for my BiQu H2 upgrade on my Artillery Genius Pro. For now, I'm sticking with the original wheel/V-notch rails (though I'll probably upgrade to linear rails "later"). Love the parts fan "chimney" being in the back.

For the Leo fan duct (using the original wheel/V-notch rails), I can confirm that reversing the lower nut/bolt on the x-axis will allow the Leo to fit (at least on the Genius Pro, but the Genius and X1/X2 are essentially the same). Originally, I tried cutting a notch in the duct as a workaround and it worked OK, but with reversing the bolt, no modifications were needed. That said, I ended up shaving off some of the bottom of the duct (~0.2mm) so it sits flat on the bed when printing and makes the overall height a little lower, without changing the interior (or performance) of the duct.

I also took some inspiration from a TriangleLab TBG-Air mount (that I'm using for my other Artillery Genius printer) and cut a channel in the top of the X-rail mount air chimney for the heat sink fan wires to route through, instead of going over the top or under the bottom of the mount (makes for a bit cleaner installation).

@ComicRelief_1067246 hi
Really great this design is useful for you.

Feel free to inform me about issues or ideas. Don't understand why you have to cut the bottom? May you sent me a picture or something?

Learned a lot in meanwhile, maybe I do another iteration 😉

@freakyDude Let's see if I can correctly attached a couple of animated GIFs...

(Note: sliced with 0.1 LH with 0.2 first layer)

I didn't "have to" shave the bottom (I originally printed a couple of the unmodified design), but the original design starts with just one 'wall' on the first layer (not a lot of contact on the bed). It then gradually increasing the number of walls until the inner portion of the duct starts to form (which hopefully you can see by watching the orange lines). Additionally, the back "square" starts around the 6th layer, making the bottom of it "float" ~0.7mm above the bed (maybe not requiring supports, but supports would not be a bad idea).

By doing a planar slice at ~0.6mm, the modified duct starts with the "square" on the bed, giving the model a larger first layer and no "floating" parts (until you get to the top of the exhaust duct. If you follow the orange lines, you can (hopefully) see in the modified model the forming of the inner portion of the duct is essentially unchanged (thus, the actual ducting part of the model is essentially unchanged). Since it also makes the duct slightly shorter, the bottom of the duct is ~0.5mm higher, ensuring it clears the nozzle (when I was adjusting my nozzle height, it was difficult for me to determine how close the bottom of the original duct was with respect to the nozzle height).

I still consider myself a novice at 3D printing (I know enough to be dangerous) and I find it difficult to do anything but simple modifications (picking up 3D CAD, but at this point, I could not design my own fan duct). Your Leo duct is very good - I just gave it a little shave. :-)

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Since switching to the mechanical endstop didn't quite solve my problem I modified the carriage a bit. Now it hits the switch every time. You could probably add a hole and a threaded insert if you want to keep the inductive end stop.
Great design!

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Looks like a great print quality of the parts. Very nice!

@freakyDude Is it possible to use microprobe for Z and eddy coil for bedmesh?

@Hades1986 Unfortunately not at the moment - there is a klipper pull request related to this problem.
I have found that using eddy without a hardware z-endstop causes more problems than it solves. I suggest using just the microprobe - or eddy together with a physical endstop. (edited)

Thank, what I suspected, better to use eddy duo

Where did you get the 360mm rails? All I can find are 350mm ones (which as you said probably works). I am thinking of switching to the H2 step by step...

@frauhottelma_2807289I hi, I ordered them from here: https://a.aliexpress.com/_EGo7Ne8

You can send the seller a message, he will send you any custom length

@freakyDude thanks. In which material did you print the parts? I have PETG, but ABS would probably better (Voron doesn't recommend PETG because of temperature stability). (edited)

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Hi! can you add support for MGN9C or at least STEP files to adapt? (edited)

@GoldeSenor_2366104
Hi.
Since I can't test the results of adapting it to the MGN9C carrier, I uploaded the step files. Feel free to do a remix or send the model - as you like.

But I look forward to see your build here (edited)

@GoldeSenor_2366104 Did you do the adaptation for MGN9C?

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After printing all the files, I dared to experiment by screwing on my extruder with REVO Nozzle.

It was already clear that the fan-duct would no longer fit, but it also turned out that the REVO Nozzle could never be lowered onto the print bed because the extruder simply hangs too high.

I took a quick measurement and then drilled a new hole 8 mm lower from the top mount hole and the whole thing fits.

The problem here is that there is no material for the lower mount hole.

If you move the two extruder mount holes 8 mm down, 5 mm to the left and remove the lower guide edge (I filed it down), then the REVO head fits.

Unfortunately I can't do this with the 3MF file. Is it possible to get the STEP or Fusion file from dh2-adapter-rail.3mf ?

Hello good! Great design! Do you plan to adapt any duct for the revo? I don't have much idea about designing and I don't know how to do it myself!

@CalixtoLealLo_570676 thank you.
I do not own a revo Nozzle - so it would be an untested version.

So either someone like to sponsor me one or I try to make an untested version some time or someone who know how, designs one and link it here.

That's all I can promise right now

Best regards

@freakyDude Yeah! If someone could adapt it to the revo it would be great! looking at forums and remixes from other pipes the difference seems to be 2mm vertically (edited)

what's the offset for using the micro probe??

@NunoBarrigol_1369806 Hi, I added it to the description.

@freakyDude whats the chance of getting mgn12h rail adapters instead of mgn9??😁😁

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