Does anyone have print settings for SUNLU high speed matte PETG

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I am getting very inconsistent colours with this, this is because of speed vs temperature, and speed changes based on geometry. It seems to be worst with their pink colour. However, I can’t believe the stuff is this bad. Their PETG (regular) and PLA all work very well and consistently. So I’m assuming I have it setup wrong.

Am not going to put my current settings in here, in case it biases the responses, but I will add them later as replies come in.

Thanks!

edit; The filament is also known as just “high speed petg”, I think SUNLU haven’t decided what to call it yet.

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Can’t speak for Sunlu here but for the problem in general.
Matte filaments, be it PETG or PLA can be tricky on several levels, similar to silk filaments.
A slight variation here or there results in inconsistent prints.
For PETG the surface quality is a factor of speed, temp and layer height.
Consistency only really happens if the flow rate does not change too much.
Sadly most models won’t allow for a consistent flow rate and things get out of whack.

I found it best to determine at which speed and at which temperature matte or silk filament changes surface appearance.
This give a window of speed and temperature in which a print has to reside to get the best results.
Key is to ensure that throughout the print neither the speed not he layer go out of bounds.
The temp we can really control on the fly, the rest we can mitigate if all else fails by reducing the overall print speeds…
Without a proper calibration though even what worked for another users might not give you the results you are after.
So why not not determine the window manually rather than trying settings from other users?
Just saying… :wink:

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PETG surface finish is generally dependent upon speed.

In the slicer preview pane set the color type selector to ‘speed’, does the result look like the print issues?

If so change outer wall speed to be constant (high speed for matte) where possible.

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Eponymous is talking about high speed filament. That is especially optimized for consistent strength and surface across a wide speed and temperature range. So I would expect that exactly those changes in appearance typically known from regular PETG don’t happen with the high speed PETG.

I haven’t tried the Sunlu highspeed filaments yet. I did try Elegoo and IEMAI. Both worked fine with regular PETG settings and appearance was much more consistent than regular Sunlu PETG. But interestingly, layer adhesion was lower even at small speeds. So I have the feeling that highspeed filament is really about optics but not about mechanical properties.

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High speed needs high flow, high flow needs shorter polymer chains, this gives weaker filament.

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Dry before you use Sunlu PETG HS Matte as I use the following settings and have had no issues. Bambu Lab X1 Carbon PETG Settings - Get Perfect Prints at least on my x1c with Bambu Studios. I hope this help,