Nozzle change and now I have issues!
Newbie here. I was experimenting with a 0.6mm nozzle and I did a nozzle change. I decided that I wanted to go back to the 0.4mm. Before the change, everything was working fine. But now I find that I can't get through a print without some issues, I have done z-test, some test squares and I think I have the z-index correct. But I'm finding it is catching sometimes, and the filament tends to web when picking up and getting caught which it never did before. I didn't change anything else.
Could I have put the nozzle in wrong? Could something have gotten caught up there? After first nozzle change some filament came out of the space between nozzle and heat bed. So I took out the nozzle and put in a clean one. Do I need to open it right up and clean the thing out? I followed the video to a T.
I have also noticed a slight burning smell sometimes. Nothing is leaking, maybe I'm just being overly cautious.
RE: Nozzle change and now I have issues!
I think I have the z-index correct.
You have recalibrated after changing the nozzle?
Do so even if reinstalling one from before; a quarter turn more or less when fitting is enough to ruin a print.
It's always worth making sure the bed is clean, a common cause of failure.
After first nozzle change some filament came out of the space between nozzle and heat bed.
This is a genuine E3D nozzle? There are cheap nozzles available with the wrong length thread...
I have also noticed a slight burning smell sometimes.
PLA sometimes smells of popcorn.
Cheerio,
RE: Nozzle change and now I have issues!
First and foremost: did you follow the E3D-V6 nozzle replacement guide - to the letter? If you didn't read and follow that guide. Do it now. Then come back and ask again if the subsequent reassembly has issues.
https://e3d-online.dozuki.com/Guide/Changing+Nozzles/45
https://wiki.e3d-online.com/E3D-v6_Assembly
And bring photos of the reassemble - especially the nozzle placement in the heater block.
RE: Nozzle change and now I have issues!
@diem
I have done the recalibrating. The bed is always clean, IPA. I bought the nozzle directly from Prusa.
RE: Nozzle change and now I have issues!
As @diem said, even something as simple as a nozzle change can throw off the Live Z and may require recalibration.
Filament oozing like you described is a tell-tale sign for a wrong hotend assembly.
The nozzle needs to be tightened against the heatbreak, not the heater block.
If correctly assembled there's a gap between the nozzle and the bottom of the heater block.
In addition to the E3D assembly instructions provided by @tim-2, there are also Prusa specific instructions in their knowledgebase:
RE: Nozzle change and now I have issues!
@tim-2
Yes, I followed the Prusa change guide exactly. I don't mess around.
My heat block was clean but I just tried the Benchy and is went perfectly until about halfway and then something happened and it went wild. ARG.
RE: Nozzle change and now I have issues!
@fuchsr
The filament came out of the bottom between the nozzle and the heat bed. I don't know how. Unless it oozed down while I was changing it.
I have successfully been able to print since without any oozing thankfully. I say successful, but it failed due to other reasons.
RE: Nozzle change and now I have issues!
Prusa's guide is not nearly as good as E3D's guide; and in my experience will cause you problems unless you ignore parts of it. e.g., your nozzle looks like it is too far into the heater block.
Regarding the Benchy - that's a clear clean adhesion problem.
RE: Nozzle change and now I have issues!
@tim-2
Thanks, I was sure I had it out enough. I'll adjust a bit.
I was able to finish a benchy to completion tonight with no issues.