There are absolutely no reason the CHT Nozzle causes this kind of issue, actually I am pretty sure the bed levelling would work without nozzle or with a stone in place of the noizzle, I would recommend you to go talk about this on this thread wich will be more related.
Changing the bed can make it too heavy, or make it grip somewhere, you may play with g-code to adjust current, but I am not sure this will even do something, or try another bed.
Oh, Iām not looking at Bambu support for this.
I just find it curious behavior.
Thanks for that info! It seems this solves the main problem of adapting the CHT nozzles.
My printer is already plenty fast, and I love that it just works, butā¦ I suspect I may try a CHT someday, so this is very helpful to know!
I just printed a benchy to push the machine a little bit. Most of the settings were taken from this thread, or one other thread about the RepRap CHT.
With a 0.4 nozzle I was able to print a very nice (with one major flaw. Which is why I think that the less aggressive Z offset is probably a good idea.) benchy in just under 21 minutes. I did have a layer shift, and I think this was due to the temperature not being high enough, or because the Z offset was too low. Iām pretty sure the layer shift was caused by the toolhead knocking into the print.
The benchy would have come out pretty close to perfect though, and Iām glad that it handled everything else pretty well (accelerations/speeds/volumetric flow, etc.).
Overall I am really impressed. The only other thing that I want in a printer is toolhead changing, but Iāll probably build/mod a Voron/RatRig/Hevort/Something specifically for that.
Has anyone tried the original Bondtech with copper and vanadium steel Nozzle with ASA from Extrudr?
I had good results with the original 0.4 Nozzle from Bambu Lab with this material. Ventilation had to be down to max 40%.
With the new Nozzle in 0.4 I can lower the temperature, increase ventilation, no matter what I do the result looks very poor.
Keep in mind with the copper nozzle that your print temps will need to be reduced
I use the CHT clone and print temps are 215-217 max for PLA otherwise I get lots of oozing and ugly layers
I still havenāt done TPU yet with the CHT clone but I figure a print temp of at least -10Ā° over the default temps or recommend temps on the spool
For ASA use the black hardened nozzle the kit came with
This is Polymaker ASA with the black nozzle and default temps
I print it externally in a filament drier, ASA absorbs moisture very fast
You might even try drying out your ASA first
With the original Bambu Nozzle (black), the ASA works quite well at 260Ā° C and looks good too.
With the new copper/vanadium steel nozzle I am already down to 240Ā° C and ventilation to 80%. Visually, it is not better and the adhesion is completely gone through the ventilation.
I run my part cooling at 30%, no aux fan and the chamber fan at 100% with the front glass door closed for ASA
Maybe you need to adjust your pressure advance and flow rate for the ASA youāre using ?
I just got lucky with the Polymaker mostly matching up with the default profile for ASA but ABS was similar to your issue, ABS printed ok with the BL nozzle but needed to be dialed in for the CHT clone
PressureAdvance cannot be set in Bambu Studio, but I did it once with OrcaSlicer. The same with the flow rate, which is normally set to 0.95 and with OrcaSlicer I got 1.024 by calibration and the math formula.
I use Orca 1.6.2
Since you are using the CHT clone I assumed you werenāt using Bambu Studio
Sorry about that
No, not the clone. I have the original Bondtech CHT almost 50ā¬ costs such a Nozzle.
I am now testing a āslowā print with 10mmĀ³/s. This is the value I also used with the Bambu Nozzle.
I thiunk you can adjust PA in Studio, please check startcode, line 322
M900 L1000.0 M1.0
M900 K0.040
Ah good to know! Currently I have a different start code: Printables
I just printed a temptower from 260Ā° to 220Ā°. Exactly the same picture from bottom to top. There can be at most more cooling but then the layer adhesion is a shame.
Ahhhhh
Ok, so I have 4 legit CHT nozzles but didnāt like how they sit just a bit too low
Iām a busy man and donāt have as much time to play with my printers as Iād like so I havenāt printed off the shorter wiper arm yet
An easier solution was the clone nozzle and to be honest not only is the hight correct but the flow is just as good as the $160 dollars worth of genuine CHTās Iāve got but also a fraction of the price
The seller of the clones sent me a message thanking me for my purchase and asked if there was anything they could do to improve my experience
I told them make a hardened version of the CHT clone for the Bambu printers
And yes, after import and taxes it cost me $160 for 4 genuine CHT nozzels lol
This is the nozzle Iād like to get some flow out of next so I really need to print off that shorter wipper arm
I got two 0.6mm and two 0.4mm genuine CHTās and 8 of the clones plus a bunch of the regular nozzles that are hardened
Everything is .4 or .6 , Iāve got one Bambu .2mm nozzle and honestly its useless for regular prints, layer adhesion sucks and itās slow
But hey, the .2 mm nozzle sure does pretty prints with those super small layer lines 
The Bondtech nozzles youāve got must thread into the throat of a clone hotend ?
Did it not come with a black hardened .4mm nozzle or is it too long ?
The new ones are factory BL length when installed and work great for regular printing with abrasive materials or higher temp stuff like ASA and ABS
260Ā° no problem
I have these:
I have now calibrated everything again with OrcaSlicer but for the time being only with maximum volume velocity of 10mmĀ³/s.
Flow: 0.9875
PA: 0,032
Component cooling: 0-40% (overhangs 80%)
Letās see how the Benchy will beā¦
Hmm that is the Brass MOS Nozzles, not recommended for abrasive materials.
It specifically warns you on top of the product page āFor non-abrasive materialsā
Edit but you are correct they should probably be the same height as Bambu Original Nozzles.
Abrasive materials and higher temp materials only get the regular correct length hardened steel nozzles
Anything brass or brass coated is for PLA, PETG, and ASA
Iām sure the CHT is fine for ASA and ABS but Iām still using the hardened steel nozzles just in case
These are what i use and where I purchase from
C$ 8.39 16%OFF | 3D Printer Lab X1 Nozzle High Temperature Wear-resistant Hardened Steel Nozzle For Bambu Lab X1 And P1P Hotend Head
https://a.aliexpress.com/_mqP3DtI
I canāt quite get the Benchyās chimney clean with the CHT. At least the seam is smudged. The whole thing also only at max. 10mmĀ³/s as with the original hardened steel nozzle.
