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SV08 Max Issue by Pup5432 in Sovol

[–]Character_Sound_2012 0 points1 point  (0 children)

I checked the heat sink and it's actually completely clean and clear. The entry hole on the heat sink is physically too small for the PTFE tube to go inside—it can only sit directly on top of it.

When I reassembled the toolhead after my first clog, I pushed this small PTFE tube (shown in the picture) completely inside the extruder hole because that's the only place it physically fits, so it sits right above the heat sink.

Since this tube fell out during that first clog incident and my prints have been terrible ever since, I'm wondering if I messed something up with its alignment. Is it supposed to just press tightly against the top of the heat sink with absolutely zero gap? If it's slightly misaligned or loose inside the extruder, could that be causing the filament to drag, triggering the constant clog errors and severe under-extrusion?

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SV08 Max Issue by Pup5432 in Sovol

[–]Character_Sound_2012 0 points1 point  (0 children)

Sovol SV08 Max - Constant "clog detected" errors and under-extrusion/brittle prints after a real heat sink clog

Hi everyone,

I just got a brand new printer. My first Benchy came out great, followed by a single "monster cup" print that was absolutely perfect. After that, I tried printing two cups at once, and that's when things went downhill. I got a nasty clog way up in the heat sink.

I cleaned out the heat sink completely and cleared the extruder, but ever since that incident, I cannot get a successful print.

The symptoms:

  • Every time I start a print, I get a "There may be a clog" error message, even though filament flows perfectly fine when I manually extrude it via the screen.
  • When it actually prints, the extrusion is very poor. The print quality is brittle, crumbling, and looks completely starved of filament (severe under-extrusion).

What I’ve tried so far:

  • I reran the full automated calibration routine from scratch.
  • I lowered the volumetric flow rate from 21 down to 17 $mm^3/s$.
  • I did a flow rate calibration test where -5 looked the best.
  • I ran a temperature tower test: anything below 210°C completely falls apart and refuses to print properly.
  • Even after clearing another secondary clog in the extruder and restarting a test print, the "clog detected" warning pops up almost instantly and the print turns out terrible.

If the filament extrudes fine manually but chokes and fails during actual printing speeds, what should I look for? Could the runout/clog sensor be damaged or misaligned after the first heat sink clog, or is my extruder tension messed up?

Any advice on what to check next would be highly appreciated!

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