Hardened Nozzle Leaks

Sovol SV08
1

I just damaged the temp probe after the second time in a month that my hardened nozzle decided that filament needed to come out of ever orifice. The first time, I pain stakingly cleaned all of the melted filament off using cotton swabs.
This time, I was going to swap nozzle holders, but found that I couldn’t get the temp probe out.

The other issue is that this thing keeps jamming during reloads. This time was PETG. It leaves a plug in the top of the tube that stems from the nozzle holder.

I have seen that microswiss has a hotend upgrade.
I also found a reference that seems to imply that there is another longer nozzle holder to use with PETG?

If I didn’t like to tinker I would have been over this machine already. It was 72 % though a 48 hour print. After the reload it knocked over eight -8 inch tall parts that would have been 12 inches when completed. Over a kg of filament trashed. I’m not sure what exactly caused that, either a blob on the nozzle end or inaccurate stored coordinates on where to resume to.

Anyway, I’m including a pic of the nozzle holder carnage.

PXL_20241215_232546836.MP
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PXL_20241215_232552388.MP
PXL_20241215_232552388.MP1920×2550 230 KB

Screenshot_20241215-175259
Screenshot_20241215-1752591008×2244 267 KB

2

Your temp probe is not attached in your picture. What do you mean :thinking: ?

BTW about the root cause maybe it’s the max volumetric speed (at bottom of the filament parameters in orca slicer). What’s? The default parameters is too high (12/13 is better with petg)

3

Hello,
It is necessary to check the shrinkage if it is too important with the printing time that is very long a plug gradually moves on the top of the Hotend. Thus the pressure increases in the Hotend and the filament ends up coming out through a micro leak. is of the life so you have to reduce the speed for the PETG to 6.4 mm/2

4

Good to know on the volumetric flow.

It’s not attached because it left the glass globe stuck in the nozzle with no way to keep the junction from shorting in the new nozzle.

I ordered a new hotend which should he here today. I will adjust the volumetric flow.