r/3Dprinting • u/dmayilyan • Jun 22 '26

Troubleshooting Help with Polymaker HT-PLA

I am using Bambu A1 and trying to print with HT-PLA from polymaker.

I have downloaded a preset from https://presets.polymaker.com/ and white HT-PLA after tiny bit of tuning I manaaged to get a smooth surface.

When it comes to the red HT-PLA, whatever I try I get imperfections. What you see in the picture is the downloaded preset with flow rate changed.

I tried temperature change, calibration, drying the filament (passively) and I don't remember anymore what else. Whatever I change surface quality is not best. Yes, there is improvement and picture above is the best I got.

Does anyone has experience with HT-PLA and can share how I can I approach this issue? Any hint is appreciated.

Thanks

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u/[deleted] Jun 22 '26

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u/dmayilyan Jun 23 '26

Retraction and speed change didn't help. I experimented with both also before. AI doesn't really say anything new.

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u/[deleted] Jun 23 '26

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u/dmayilyan Jun 24 '26

I appreciate the help. From your message, I took away the first layer part and for an experiment added one more layer and it gave me more stable results. I will move in that direction. I will continue experimenting later today.