V4 500 IDEX shitload of small crums
Overtightened my primary extruder and now molten filament is streaming down from the direction of the heatsink. IDEX and Remap toolheads to the rescue... so I thought.
A small print approx. 20min prints flawless, but as soon as I print a large model little wisps and strands appear several layers in and the situation gradually grows worse and worse. In the end I end up with an unusable print and a build plate literally filled with broken off and tossed around crums.
Included pictures:
01 Small RJ45 cap which printed flawless
02 Large model to be printed (4 on a plate)
03 Resulting print halfway through
04 Some of the crums (microscope)
RatRig performed flawless for over 680 hours on the primary nozzle and having no clue what's causing this mess.




Solution:Jump to solution
Ok, after printing a temp tower for the second hotend I upped the temperature from 210°C (best for first hotend) to 240°C (I'm printing PETG).
Now everything prints fine on the second hotend.
Which begs a new and different question......
3 Replies
Looks like something between nozzle and hotend isn't tightened, you said you installed a new one?
I'm still waiting for my replacement hotend/nozzle to arrive (begin to mid August ☹️ ).
I'm redirecting the gcode for the first extruder to print on the second one (https://os.ratrig.com/docs/configuration/idex/ - REMAP_TOOLHEADS).
It's the second extruder that's giving me grief.
I've tightened both the V6 nozzle and adapter (carefully and with both hands now) and re-aligned position and height of both nozzles (VAOC).
Can't think of anything else, that's why I posted here.
IDEX Macros | RatOS
- IDEXSINGLE
Solution
Ok, after printing a temp tower for the second hotend I upped the temperature from 210°C (best for first hotend) to 240°C (I'm printing PETG).
Now everything prints fine on the second hotend.
Which begs a new and different question...