To quickly and easily tune your settings to achieve optimal retraction, download the cube retraction print here, and print it with your current settings. Following are photos of a stringing test with various combinations of settings. Cura Retraction Settings on Ender 3. TPU - 205 °C - Layer thickness 0.2 mm - Retraction 2 mm - Print speed 15 mm/s. We only need to consider 2 factors here. Too much retraction. We only need to consider two factors here. PLA for reference - 205 °C - Layer thickness 0.2 mm - Retraction 1 mm. Perhaps to fix a problem, or to try to get the perfect print. Retraction: As the Ender 3 has a Bowden style setup, retraction settings are much higher. A default profile will not give you any idea how much you can change a setting. The perfect Cura settings for your Ender 3 ... Retraction is broken down into two main settings: Retraction distance Retraction speed Essentially, retraction is a tool that reverses the extruder motor to relieve pressure on the nozzle during travel. Retraction distance: 5 mm Retraction speed: 45 mm/sec: Part-cooling fan: This should be on. However, it may take a few tries before you find the best setting for you and your print. Based on your results, adjust either the travel speed or the retraction distance and reprint. Starting with the Ender 3 default settings in CURA is a good start. We typically use about 2-3mm on our Bowden machines when fitted with our Tough Tube and 3-4mm when using stock PTFE tubing with the larger inside diameter. Ender 3 Stringing – Which (Retraction) Settings Help? Retraction Enabling: First, go to the ‘Travel’ settings and check the ‘Enable Retraction’ box to enable it Retraction: PLA is a stiffer material, as well as thus it can be easily tuned. Download the Retraction cube files here. PLA is a runny material, so it needs to be adequately cooled. Hi, I noticed the same thing with some small models on my ender 3, the solution was to double the retraction, but the most important things were the speed and the temperature (PLA hatchbox), I went about 30% of the speed and went from 200°C to 190°C (200 only the first layer) my bed was 50°C. For many reasons you may want to tweak a preset Cura profile. The Cura retraction settings on Ender 3 printers usually include different settings and the ideal and expert choice for these settings will be as follows. Retraction range: 5 mm Retraction speed: 45 mm/sec Part-cooling fan: This should be on. As the Ender 3 has a Bowden style setup, retraction settings are much higher. Simple cheat sheet showing a range of values for the most important settings in the Cura slicer for CR-10 and Ender 3 (and variants.) More retraction = higher chance of jamming. Hopefully, without pressure on the nozzle, no excess material should be extruded. 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