Now that the MP3DP V4.1 is up and printing.
Sorry, I didn’t do a build log for this one, but if anyone is interested I can list what I used and post more pictures and videos.
Now it is time to upgrade the V3 to a V4.1 
Took the Printer apart, the only thing that I’m not planning on using is the SKR Pro1.2 as I bought another Manta M8P V1.1 and EBB42, everything else will be reused.
Clean builds!
You work fast. Should I start a new revision to see who finishes first?
Why not!!! 
Here is a picture of the new frame.
Still a lot to do on the frame, all the 3D parts has been printed except the X carrier and fan duct, as I’m planning to use 2 fans again specially with the Volcano hotend and 0.6 nozzle.
One interesting thing though, the BIQU H2 with 2 fans printing at 225C, 100mm/s perimeter, 70mm/s exterior wall and 140mm/s infill, if I have the fan set to anything over 52%, the filament cools too fast, and I don’t get a good layer adhesion, the printed part just falls apart.
Cheers for sharing your build journey. Where’s your controller, PSU, got SSR too?
Everything is in the back of the printer. I can’t take a picture right now as the printer is Printing 
Yes, SSR as I’m using the Sidewinder X1 Fula-Bed same bed I have (had) on the Repeat V3(??), I will take a picture tomorrow.
For this upgrade, I’m planning to do the same, maybe change the position of some components as I won’t need to add the U2C and maybe that will make the wiring a little cleaner.
I love that you attached the wagu wire connectors. It makes it so much cleaner.
I should really pull my relays off of the heatsinks. They’re really not needed with as little amperage the devices are pulling.
Agreed, also very easy to make the connections.
Exactly, on the V3 I had the heatsink installed and the relay was never hot, pretty much room temperature, so I got it out for this one.
I will do the same for upgrade.
Good to know. What sized nozzle (revo?), and layer height (been looking at max flow)? I think you might be on the bleeding edge of flow rate for that little heat block. They only list it as 10mm^3, that doesn’t seem right to me, the hemera is similar and gets 13mm^3. A CHT can bump that 20-50%. https://youtu.be/qBvTWFEd7rk?t=583
P.S. I really like the way the H2V2S looks if paired with a CHT (maybe even CHT Hardened tip). Much lighter, more compact, and a bit cheaper than the Hemera XS. The H2 light seems really nice except the non-standard nozzles (might ask if they will send me special builds with the standard heater and nozzles).
No revo, this is the first generation H2 that I got back in August last year.
0.4 nozzle, I usually print at 0.28mm
I just upload a video that shows printing at 140mm/s infill, it is pulling 16.2mm^3 and at 100mm/s on the perimeter it is at 10.1mm^3/s
I think we can get a lot more out of this little bugger. I will have to do more tuneup to get it to print faster, but for now I’m pretty damn happy with it.
I stop the printer as I don’t need to print another test cube…
here is a picture that shows the infill and the Y side of the printed part.
That is insane!!! Nice work.
So I guess when the fans come on is the extruder still holding temp?
I am very excited to run my H2 with a CHT now!!! I am prepping a 12"x12" 24V / mains bed. 24v 5015 fans push so much more air than a 12V I hope one is fine.
Yep, it holds right after a dip to about 223.5 to 224, it goes right back up and holds at 225
Shit!!! I forgot to get a serial number for that printer…I will do it now…
Is the serial number transferable??? As this “new build” is an upgrade??
You should think about trying Klipper, you will be surprised.
I don’t know what you have for acceleration, but I’m running at 7000
########################################
# PRINTER
#######################################
[printer]
kinematics: corexy
max_velocity: 800
max_accel:7000 #10800
max_accel_to_decel: 3500 #5400
max_z_velocity: 400
max_z_accel: 200
square_corner_velocity: 4.5
As you can see on my print config, I did try 10000 but had issues with ghosting…
I’m hoping that with this upgrade, the extra brace in the front will help with rigidity and eliminate ghosting at 10000 acceleration
I have a stack of new parts sitting here, and I was starting to load up klipper, have a bag of accelerometers… This big printer will be my mess around printer when I build it. I have almost all the parts ready. I am almost done with the first prototype of a new project for bagging screws. If that goes smooth, I should have more time to experiment.