# Severe Stringing on Retraction Test (OrcaSlicer) **URL:** \ **Category:** General Discussion\ **Created:** [February 7, 2026, 11:27am UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604 "2026-02-07T11:27:41Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![fputra](https://avatars.discourse-cdn.com/v4/letter/f/3bc359/32.png) [@fputra](https://klipper.discourse.group/u/fputra)\ **Post date:** [February 7, 2026, 11:27am UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/1 "2026-02-07T11:27:41Z")
Hello everyone, I’m experiencing severe stringing while running a retraction test in OrcaSlicer. Printer setup: Printer: Voron Switchwire Firmware: Klipper Extruder: Direct Drive Nozzle: 0.4 mm Filament: PLA Slicer: OrcaSlicer Issue description: Long and thick strings between towers Oozing and blobs on tower tips Retraction appears ineffective even though it is enabled ![20260207_175447](https://global.discourse-cdn.com/free1/uploads/klipper/original/3X/d/b/db88fa3f9833515107cdcf59d7934e2eab636ee1.jpeg) Thanks & Regards Fputra ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [February 7, 2026, 12:16pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/2 "2026-02-07T12:16:25Z")
Did you run the calibration in OrcaSlicer? There are also clibratione tips here: [Tuning | Ellis’ Print Tuning Guide](https://ellis3dp.com/Print-Tuning-Guide/articles/index_tuning.html) and here: [https://teachingtechyt.github.io/calibration.html](https://teachingtechyt.github.io/calibration.html) Is the filament in proper condition (dry enough)? > [@fputra](#): > > Retraction appears ineffective even though it is enabled Hard to tell without the requested klippy.log. Please attach it to your next post. In all, it is more a slicer and/or filament issue that one with Klipper. ---
**Author:** ![fputra](https://avatars.discourse-cdn.com/v4/letter/f/3bc359/32.png) [@fputra](https://klipper.discourse.group/u/fputra)\ **Post date:** [February 7, 2026, 12:47pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/3 "2026-02-07T12:47:05Z")
Thank you for the response. Yes, I have already run the basic calibration in OrcaSlicer, including the retraction test. I followed this video guide: [https://www.youtube.com/watch?v=g8kNuXuziCc&t=301s](https://www.youtube.com/watch?v=g8kNuXuziCc&t=301s) Regarding the filament, it was just newly opened from the sealed plastic packaging. ---
**Author:** ![3dcoded](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/3dcoded/32/20297_2.png) [@3dcoded](https://klipper.discourse.group/u/3dcoded)\ **Post date:** [February 7, 2026, 1:01pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/4 "2026-02-07T13:01:12Z")
Hi @fputra , What hotend are you using and what temperature are you printing at? Also, depending on how humid it is where you are, you may still need to dry the filament even if it is newly opened. ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [February 7, 2026, 1:05pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/5 "2026-02-07T13:05:51Z")
I just remember as @3dcoded mentioned the hotend: I set up a wrong thermistor and it always was too hot. @fputra : Again, please attach your klippy.log. ---
**Author:** ![fputra](https://avatars.discourse-cdn.com/v4/letter/f/3bc359/32.png) [@fputra](https://klipper.discourse.group/u/fputra)\ **Post date:** [February 7, 2026, 1:07pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/6 "2026-02-07T13:07:01Z")
Hi, thanks for the follow-up. I’m currently using an phaetus rapido 2 **hotend**. For this retraction test, I was printing PLA at **around 200 °C**. I understand your point regarding humidity — I’m located in a relatively humid environment, so even though the filament was newly opened, I will try **drying the filament** and re-running the test at a **lower temperature** to see if there’s an improvement. Thanks. ---
**Author:** ![fputra](https://avatars.discourse-cdn.com/v4/letter/f/3bc359/32.png) [@fputra](https://klipper.discourse.group/u/fputra)\ **Post date:** [February 7, 2026, 1:09pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/7 "2026-02-07T13:09:34Z")
[klippy (1).zip](https://klipper.discourse.group/uploads/short-url/4OEFudiUtDjoLiyLx5FuYfgqLsm.zip) (4.1 MB) thank you ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [February 7, 2026, 1:24pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/8 "2026-02-07T13:24:48Z")
> [@fputra](#): > > phaetus rapido 2 **hotend**. That hotend can have two different heat sensors: > The Phaetus Rapido 2 hotend typically uses either a **PT1000** sensor or a **104NT-4-R025H42G** (104NT) thermistor Have you tried the 104NT in your setup? BTW: Do you have a possibility to check the real temperature of the hotend? E.g. a multimeter with the multimeters own thermistor attached. ---
**Author:** ![fputra](https://avatars.discourse-cdn.com/v4/letter/f/3bc359/32.png) [@fputra](https://klipper.discourse.group/u/fputra)\ **Post date:** [February 7, 2026, 1:51pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/9 "2026-02-07T13:51:32Z")
I haven’t tried configuring **104NT** in my setup yet. I also haven’t measured the temperature using a multimeter. However, I have previously disassembled the hotend and visually inspected the temperature sensor, and it appears to match the one shown in the attached image. ![image](https://global.discourse-cdn.com/free1/uploads/klipper/original/3X/3/6/365364444ccc1caea941eb7f3124c4502b72b3b1.png) ---
**Author:** ![fputra](https://avatars.discourse-cdn.com/v4/letter/f/3bc359/32.png) [@fputra](https://klipper.discourse.group/u/fputra)\ **Post date:** [February 7, 2026, 2:04pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/10 "2026-02-07T14:04:49Z")
When I configure the temperature sensor in **printer.cfg** as: ```auto sensor_type: ATC Semitec 104NT-4-R025H42G ``` the temperature reading is incorrect. Even when the hotend is cold, it already reports around **157 °C**. ![image](https://global.discourse-cdn.com/free1/uploads/klipper/original/3X/d/4/d40d1f4c53b28a6bf1880f5a3a6668d709902213.png) ---
**Author:** ![3dcoded](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/3dcoded/32/20297_2.png) [@3dcoded](https://klipper.discourse.group/u/3dcoded)\ **Post date:** [February 7, 2026, 3:02pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/11 "2026-02-07T15:02:09Z")
> [@fputra](#): > > I’m currently using an phaetus rapido 2 **hotend**. > For this retraction test, I was printing PLA at **around 200 °C**. I would try lowering the printing temperature to 180ºC and reprinting the retraction test. The Rapido 2 with the screw-in thermistor (I forgot which type) has been known to under report temperatures before. ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [February 7, 2026, 3:25pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/12 "2026-02-07T15:25:26Z")
Is the issue with all filaments or just this certain one? ---
**Author:** ![fputra](https://avatars.discourse-cdn.com/v4/letter/f/3bc359/32.png) [@fputra](https://klipper.discourse.group/u/fputra)\ **Post date:** [February 7, 2026, 3:57pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/13 "2026-02-07T15:57:59Z")
This issue occurs with all filaments. What I find unusual is that when I increase the travel speed to 7000 mm/min, the result becomes much cleaner with significantly less stringing. However, when I reduce the travel speed to around 100 mm/s, heavy stringing appears again. I’m trying to understand why slower travel moves result in more stringing, while much faster travel moves seem to improve the print quality. However, on the other hand, very high travel speeds also cause problems. When printing more complex models, the print sometimes loses bed adhesion and detaches from the bed. ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [February 7, 2026, 4:02pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/14 "2026-02-07T16:02:38Z")
Can you please post the gcode of the test object? ---
**Author:** ![fputra](https://avatars.discourse-cdn.com/v4/letter/f/3bc359/32.png) [@fputra](https://klipper.discourse.group/u/fputra)\ **Post date:** [February 7, 2026, 4:16pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/15 "2026-02-07T16:16:09Z")
Pada Sab, 7 Feb 2026 pukul 22.35 Ewald \<[notifications@klipper.discoursemail.com](mailto:notifications@klipper.discoursemail.com)\> menulis: (Attachment obeject 100 mms\_PLA\_4h42m.zip is missing) ---
**Author:** ![fputra](https://avatars.discourse-cdn.com/v4/letter/f/3bc359/32.png) [@fputra](https://klipper.discourse.group/u/fputra)\ **Post date:** [February 7, 2026, 4:27pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/16 "2026-02-07T16:27:08Z")
Did you have a chance to see the email I sent? The file is quite large, so I wasn’t able to upload it directly to this forum. ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [February 7, 2026, 5:28pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/17 "2026-02-07T17:28:33Z")
> [@fputra](#): > > Did you have a chance to see the email I sent? ![grafik](https://global.discourse-cdn.com/free1/uploads/klipper/original/3X/3/6/36c1695e69f5895302144f9e5a451b7716298f7f.png) You can upload the file here. ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\ **Post date:** [April 8, 2026, 5:28pm UTC](https://klipper.discourse.group/t/severe-stringing-on-retraction-test-orcaslicer/25604/18 "2026-04-08T17:28:44Z")
Closed on April 8, 2026, 5:28pm UTC This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.