3d printer retraction problems

3d printer retraction problems. Sep 28, 2014 · I just got my Ultimaker 2 and it initially worked great. Note that other slicers feature variations on the names of these settings, but they serve the same function. Jul 25, 2019 · 195 °C, 0 % Infill, Retract Before Outer Wall: On Note: the retraction setting resulted in a noticeable pause before printing the outer wall. If you notice stringing after your print is complete, here are some post-processing techniques to clean it up: Nov 23, 2023 · One of the most common causes of a squeaky 3D printer is the lack of lubrication. Jul 18, 2021 · Retraction, or pulling the filament back during travel, relieves pressure on the nozzle. This affects the print quality and strength of the printed part. It is essential that the retraction settings should be calibrated accurately to get a well-crafted, high-quality print. 3D printer filaments have a very wide range of temperatures at which they can work. All common 3D printing problems and their solutions. Filament: eSun PLA 1. When I print something with several different high areas separated by low areas (the latest is printing t Nov 9, 2020 · How Do I Fix 3D Printer Heat Creep? To get rid of this problem it is recommended to reduce the heat at the beginning because its results may cause bigger problems. Additionally, using retraction in your 3D slicer settings helps prevent other forms of over-extrusion, such as zits and blobs, which can appear on the exterior of your prints. Retraction settings are useful for getting smooth, well-shaped prints and help avoid stringing , but can also cause unwanted blobs and zits in seemingly random places if Nov 17, 2023 · Don't let 3D printer under-extrusion ruin your prints. There are many small filament strings on the printed model, especially the intermittent strings in the gap part … How to Fix Stringing Problem in 3D Jan 12, 2024 · 3D printer stringing is a common problem, especially with flexible materials. When required: Initial calibration, any time the hot end or extruder is changed, when trying a new type/brand of filament. Generic name: oozing Break possible Plastic continues to flow from the head as it moves, due to residual pressure in the heating element and the fluidity of molten plastic. Oct 3, 2016 · Retraction is a super useful setting you can use within your slicer to greatly improve the quality of your 3D Prints, but it's very misunderstood! In this 3D Nov 2, 2022 · This tower starts printing at 1mm retraction as I set in the Cura script option and add 1mm retraction per 38 layers (1 stage), so we get the result for 1~6mm retraction distance. There doesn't seem to be anything strange about the G-code, either. 🤬 The most common defects and problems in 3D printing. Keep the nozzle clean. Find out the causes and solutions of this common problem and improve your print quality. . Add your printer through the “Add a networked printer” section if your printer is networked with your computer already. 5 mm; Retraction Speed: 35 mm/s (Source: esigno via Reddit) It’s essential to find the right balance. 5 mm, 40 ~ 60 mm / s ¶ Under extrusion. Jun 20, 2023 · Get It 3D Printed Source: EmilyChrist via Printables. Also, select “Expert Mode” on the top-right side of your screen. Since this does not apply to single nozzle printers – just leave it at the default settings. com/thing:2450004temperature test: https://www. Feb 20, 2024 · Gaps and holes in 3D printing cause major problems: they’re ugly to look at, ruin your model, and make useable parts unstable and even brittle. Prusa MK2/MK2S: The Prusa’s PINDA sensor is temperature sensitive and will give false readings if the probe is heated before the mesh bed leveling. The good news is that most 3D printing problems have simple fixes, and you don't need to go back to school or buy a new printer. He especially enjoys researching and writing about 3D printing to help other users in the field. The Retraction feature pulls the filament back from the nozzle into the hotend while the nozzle is moving and isn’t printing to avoid leaks. Whether over extrusion or blobs on the print surface, you can face various issues when 3D printing. It generally does not cause printing failure, but it will make the model’s surface very unrefined. If the 3d printer is well calibrated and maintained it will not produce a lot of stringing. Discover the secrets of 3D printing retraction in this guide. If your printer is not networked, find the Ender 5 profile in the Creality3D sub-category of the “Add a non-networked printer” section. Includes both FDM and SLA 3D printing issues. Without lubricating the metal moving parts of your 3D printer, it may begin to squeak, leading to even more problems later on if not treated. But it can also allow time for the leaky filament to solidify. They are the same problems that we commonly encounter in our online 3D printing service, and so we have quite a bit of experience dealing with and solving them. To set the correct parameters concerning retraction during 3D printing, including retraction distance, speed, extra restart distance, prime speed and z hop. 3D Printing retraction is a common phenomenon and there are many facts available about it on the Internet. This is usually caused by insufficient extrusion, and there are two phenomena: overall under-extrusion and local under-extrusion. 5 mm, and this is not a Bowden fed device. Use a test print in which you increase the retraction speed by 2-5mm/sec each time until you notice a sufficient improvement. Luckily, you can stop stringing on your 3D printer through retraction, a printing feature that pulls filament back from the hot end to stop over-extrusion, such as stringing, from happening. Read on to learn all about 3D printer retraction! Sep 6, 2022 · Complete 3D printing troubleshooting guide. Dec 18, 2023 · 3D print stringing can be a challenging issue in 3D printing, but there are effective methods to tackle it during and post the printing process. This article runs through seven common 3D printing problems with solutions to help you get a handle on your 3D printing. Lack of lubrication can cause parts of your 3D printer to catch and mess up your print. Under-extrusion is a common problem in 3D printing that occurs when too little filament is extruded. Oct 8, 2023 · A clicking extruder can be irritating and lead to failed 3D prints. Sep 2, 2020 · Perhaps the most ubiquitous 3D printing material in the world, PLA has become the default choice for most when it comes to FDM 3D printing. In other words, it makes the nozzle ‘retract’ once the set amount of filament is extruded. In this blog post, we’ll discuss what causes excess dripping resulting in stringing and oozing, and how to fix these issues using retraction. Jan 8, 2022 · Retracting a greater length of filament generally causes better pressure relief in the melt zone. Aug 7, 2023 · If your 3D printer has under-extrusion issues, you will experience inconsistent layers, gaps in 3D prints, and poor bed adhesion. Where high print temperatures is a huge problem, other factors such as printing speed and retraction length should also be calibrated perfectly to get the best results. To get an optimal retraction minimum travel distance for PETG, start at 2 mm and reduce the distance gradually by 0. May 28, 2023 · Pulling filament back into the hot end is a useful function but tricky to master. 5. Sep 14, 2020 · What 3D Printing Problems Do Retraction Settings Fix? As mentioned above, stringing or oozing is the major and most common problem that occurs just because of wrong retraction settings. 3. The settings you will want to change are Retraction Distance and Retraction Speed. There was huge improvement in retraction quality. This setting tells the printer to use its retraction mechanism. Also on the websites from where you can download 3D design files the makers of that design have special recommendations of 3D printing retraction speed, 3D printing retraction calibration, etc. Retraction Distance: 6 mm; Retraction Speed: 40 mm/s; For Direct Drive 3D Printers. In addition, however, other settings such as the temperature of the nozzle and the speed of the empty runs, the so-called travel moves, can also influence the quality of the print results. High-end enclosed 3D printers makes things easier. 3D printing beginners usually encounter stringing issues during their printing process. Jun 21, 2022 · One user who experimented with retraction settings found that after changing their Retraction Distance from 6mm to 5mm, they noticed a difference in how much the Z seam appeared. Read on to find out a few easy ways to eliminate this problem! Oct 11, 2022 · The good news is that most 3D printing problems have simple fixes, and you don’t need to go back to school or buy a new printer. Some are between lines, while others may consistently occur within or between certain layers. thingiverse. So far, it seems to be working! View all of Kerry Stevenson's posts. More often than not, we end up setting the printing temperature much higher than what is Feb 2, 2023 · It all comes back to constrained filament paths being the root cause of any concerns. May 29, 2024 · Get It 3D Printed Source: E3D. Owns over 20 3D printers (filament and resin) and has plenty experience 3D printing. Feb 24, 2024 · Avoid ambient drafts and temperature swings around the 3D printer. Stringing issues is a very common issue in 3D printing. There are a few different kinds of gaps and holes you may find when 3D printing. Jul 13, 2022 · Retraction in 3D printing is the process of withdrawing the filament from the hot end of your 3D printer while it moves from point to point and helps prevent excess dripping. We have put together a collection of the most common problems that arise when using our 3D printer. I have been having a problem with stringing on my 3D printer, so initially I increased retraction distance from 6. Enable Retraction. Let’s explore how to identify and resolve 3D print stringing problems: Post-Printing Fixes. 4. This guide is a great place to start if you are trying to improve the quality of your 3D printed parts. Getting your retraction settings fine-tuned is one of the first steps in calibrating a new 3D printer to get the best results possible out of every print. The retraction mechanism is active by default in most of the common slicers. The value that you input for the retraction extra prime amount setting determines the amount of extra filament the printer will prime after a retraction and the travel move that follows it. Nov 15, 2023 · Understanding Retraction in 3D Printing. Jan 19, 2023 · Mike started his 3D printing journey with the Anet A8 when it first came out back in 2017, and has been obsessed with 3D printers ever since. Retraction Distance Nov 2, 2022 · Here are the best 3D printer adhesives that you can use to get the best first layer for PETG filament: Stick Stick 3D printer adhesive; Magigoo 3D printer adhesive; 3DGloop! 3D printer adhesive; Most 3D printer bed adhesives have the same instructions for use: apply a thin layer to the build surface where your actively 3D printing. May 29, 2020 · Michael Dwamena is the founder of 3D Printerly, a platform dedicated to simplifying 3D printing for hobbyists and professionals alike. The preset number in PrusaSlicer is 1 mm, which is a low amount. Stringing and oozing are caused by the excess material that leaks out of the nozzle when the hotend moves from one part of the model to another without extruding. Now that you know what retraction is and why you should use it, you’re Dec 18, 2023 · 3D print stringing can be a challenging issue in 3D printing, but there are effective methods to tackle it during and post the printing process. Jul 18, 2023 · Go to Printer Settings; Select Extruder 1 and locate the Retraction Settings; Check the “Retraction on Layer Change” box; 1. It might have strings and other imperfections, and you can Jun 29, 2022 · Here are the best 3D printer adhesives that you can use to get the best first layer for PLA filament: Stick Stick 3D printer adhesive; Magigoo 3D printer adhesive; 3DGloop! 3D printer adhesive; Most 3D printer bed adhesives have the same instructions for use: apply a thin layer to the build surface where your actively 3D printing. Although enabling retraction is useful regardless of the type of printer, Bowden type machines usually require a higher retraction distance compared to direct driver printers. Judging from the result, the best performing retract distance is 1~2mm for its minimized string and no under extrusion. You will need to experiment a little until you find the right settings for your machine. Nowadays, he primarily uses his Ender 3 to print functional parts that make his life more convenient whenever possible. Jul 13, 2022 · 1. If you have a standard 3D printer like an Ender 3, you’ll want to make modifications such as having an enclosed chamber, a hotend that is high quality, and settings that have been dialed in. Retraction distance is 6. Symptom Thin filaments are woven in the empty spaces between the different parts of the part printed in 3D. Yet, Ender 3 users and those printing with PLA, ABS, or PETG are more likely to run into this issue. Ideal for creating functional parts, tools, and high-wear objects, Nylon's unique properties make it a top choice for hobbyists and professionals Nov 16, 2023 · Retraction Problems; Retraction is a 3D printer feature that governs two things: the filament amount released and the speed with which the nozzle recoils. * Free Shipping on +$35 orders in the U. Different brands of PLA and different printers may need slightly different retraction settings, so you may need to experiment to find the best value for your printer. Jun 30, 2023 · The Ender 3 (V2/Pro/S1) printers are great at pushing filament, but stringing can be a problem. Raise your probe a good distance off the bed during the preheat before mesh Feb 7, 2023 · 5 Solutions for preventing 3D Printer Stringing: 1. Retraction settings can be found in Slic3r PE in Printer Settings – Extruder 1. Jackson has built a handful of 3D printers and loves spending time improving his machines and making new DIY projects. 2. Aug 21, 2022 · He's studying finance and computer science at the Georgia Institute of Technology and is deeply interested in 3D printing technology. Overcome this issue with these five simple solutions! Nov 6, 2023 · (Image credit: Tom's Hardware) To use the test print above, you can begin with a lower retraction distance like 2mm, print the model and see how it will look like. Retraction is the recoil movement of the filament necessary to prevent dripping of material during movements and displacements that the vacuum extruder performs during 3D printing. FDM 3D Printer Issues & Solutions. While strings can be removed […] This pressure relief is usually sufficient to activate the retraction and prevent the stringing problem. * Customer Service +1 (800) 613-4290 Jul 13, 2019 · My model had many retraction moves, such that the amount of filament used during a printing move was less than the retraction distance. Setting the right parameter – especially the right retraction speed and distance – can help solve the issue. Warping. Reducing the print speed and increasing the travel speed. Under and over extrusion Credit. 0 that can help with this, by allowing you to quickly try dozens of different settings, and then look at the final part to Jul 12, 2021 · Polycarbonate filament can be hard to 3D print with depending on your setup. MatterHackers FREE, FAST Shipping on orders over $35 in the U. Lower temp, 190-200 Raise the z a bit to give your nozzle some room and try to feed the filament manually by squeezing the extruder arm and pushing filament through. S. The reason is the following: 3d printers that use the Bowden system (like the Ender3) place the extruder away from the hotend, and the filament is channeled through a Jan 3, 2022 · The most important setting of all is retraction. However, if you are printing with your own settings, make sure that you have the retraction settings set correctly. Source: Ultimaker Support. Oct 10, 2015 · Kerry Stevenson, aka "General Fabb" has written over 8,000 stories on 3D printing at Fabbaloo since he launched the venture in 2007, with an intention to promote and grow the incredible technology of 3D printing across the world. Jun 26, 2022 · Keeping your nozzle at temperatures that are too high results in stringing. Another problem you might encounter is bed leveling not enabled. The standard recommendation is to set the retraction distance at 5 mm at the start and adjust as necessary. Jul 14, 2019 · Whether you’re running into clogged nozzles, warped prints, or prints that collapse, there’s probably a feature in your 3D printer or slicer software that is specifically designed to help you solve the problem. Go to Printer Settings. One of the most common 3D printer problems that people experience is something called warping. Dec 26, 2023 · 3D printer retraction is a method used to address the stringing problem by withdrawing filament from the hot end while the printer moves between points. Learn how to adjust and test settings to achieve flawless prints, reducing stringing and improving overall quality. test the right retraction distance and retraction speed. stringing test: https://www. Every 3D slicing software has retraction settings, and we’ll go over them to help you get to a “no stringing” zone with all of your Ender 3 prints, Ender 3 Pro prints, or Ender 3 V2 prints. Keep the filament dry. Not suggested methods of placement and printing Suggested methods of placement and printing Increase the retraction length and retraction speed: 1. Oct 27, 2023 · 3D Print Stringing: Common Causes and Quick Fixes. With some calibration, warping can become a non-issue allowing users to unlock larger and more ambitious print jobs. A higher value improves stringing, but if it is too high it may skip steps in the motor. The parameters that configure the retraction are: Retraction distance: Length of material that recedes in the Apr 27, 2018 · Use proper printing settings – We highly recommend using the preset settings in Slic3r PE or PrusaControl. Why?! (3/16/2016) White one was done by RepRapPro Fisher last year. Oct 11, 2022 · 3D printers can produce amazing things, but they can also produce incredible disasters. For TPU I just turn retraction off. Adjusting your Ender 3 retraction settings can help solve these problems. Apr 10, 2022 · I wrote a more in-depth article about 3D Printer Enclosures: Temperature & Ventilation Guide. Find out how to perfect your Cura retraction Oct 26, 2023 · If this distance is too much, it may prevent any retraction from happening, while tiny distances will constantly trigger retraction and make the printing process slow. /r/3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices. It occurs when molten plastic leaks out of the nozzle and forms thin strands when the printer head moves from one point to another. Under extrusion happens when the 3D Jan 25, 2024 · Here are the ideal PETG retraction settings based on my experience working with over 30 3D printers : For Bowden tube 3D Printers. Feb 20, 2024 · For clarity and to serve as many readers as possible, we’ll focus on Ender 3 Cura retraction settings, given it’s the most popular 3D printing slicer. If the Z-Hop in Cura greatly extends your print times, it’s better to use it only when necessary. Mar 6, 2024 · By understanding a little more about the 3D printing process, and how settings in MatterControl affect extrusion, we can help you reduce and even eliminate oozing and stringing from your 3D prints. We have compiled an extensive list of the most common 3D printing issues along with the software settings that you can use to solve them. 2 ~ 1. I found that several trips through the feed gear flattened the filament, which caused two problems. Here are the G0 travels just before the outer wall followed by the Jan 19, 2023 · Retraction is one of the things we can consider being fundamental for a successful printing process, known for its role in preventing common 3D printing issues such as stringing and oozing by pulling the filament back from the nozzle whenever necessary to achieve its goal. Over and over. Apr 22, 2024 · The Creality Ender 3 is a reliable 3D printer, but it can still suffer from issues like oozing and stringing. Excessive Print Times . Mar 17, 2023 · Below, I’ve split up the most common 3D printing problems and solutions based on what 3D printing technology (FDM or SLA) they relate to. You can increase or decrease your Retraction Distance in small increments to see what works best for your 3D printer and other settings. Sep 14, 2020 · To fix retractions that are too high, turn your retraction distance and speed down to a lower value to see if it fixes retraction issues. PETG combines the best qualities of both PLA and ABS. Image credit: PrusaPrinters Forum. Then I tried again, with the same issue, so I increased retraction speed and lowered the extruder temperature. Printing slowly ensures smoother print lines. To fix this, you need to adjust your settings in the 3D printer Oct 25, 2023 · First Layer 3D Printing Tips for Specific 3D Printers Bed leveling on the Ultimaker 2+. If you are struggling to identify the root cause of your 3D printer stringing, it is probably worth carrying out the physical maintenance — correctly storing filament and regularly cleaning Aug 12, 2022 · Read on to learn all about 3D printer retraction! Pulling filament back into the hot end is a useful function but tricky to master. Advanced 3D printers like the QiDi X-Max 3 also use Active Chamber Heating technology, maintaining a stable 65°C internal temperature to prevent part warping. com Jan 19, 2023 · Retraction extra prime amount is a setting that you can find in the Retraction Settings section of Cura. Jan 19, 2023 · An appropriately configured set of retraction settings for the type of filament you use goes a long way to reduce and eliminate many of the 3D printing problems, with the widespread issues of stringing and blobbing being the first ones that come to mind. Generally, under-extrusion is not a sign of any major hardware problem with the 3D printer, but the phenomenon can have a range of causes, which makes it tricky to diagnose the underlying issue. 8 Ways To Fix Stringing Reduce your printing temperature. This should be a part of the regular maintenance and calibration program for your 3d printer. The decisive parameters for retraction in 3D printing are the Retraction Speed and the Retraction Distance. While yes, most direct-drive 3D printers are more responsive than bowden 3D printers when using flexible 3D printing filaments, bowden 3D printers are fully capable of creating beautiful 3D prints with flexible filaments. Boasting the functionality and durability of ABS while retaining the printability of PLA, PETG is also great for mechanical applications due to its amazing layer adhesion, low warping and high impact-resistance. Retraction Speed: Extruder motor speed on retraction. Retraction is a crucial technique that involves physically retracting material within the printing head during movement. However, excessive retraction can also damage the filament and cause other extrusion issues. First, go to the Printer Settings on the menu bar on the top-left side of your screen. There will still be some stringing but it should be minimal and removed easy with post processing. 3D printers activate the retract mechanism when there is an empty space over which the print head has to pass. Print Speed. If you notice stringing after your print is complete, here are some post-processing techniques to clean it up: Feb 20, 2024 · Filament grinding can be caused by a wide range of problems, from filament issues and incorrect slicer settings to mechanical problems with your 3D printer, In this guide, I’ll help you work out why you’re experiencing filament grinding, drawing on over 5 years of 3D printing experience 6 days ago · Retraction after layer change: on Wipe on retraction: on. This article is free for you and free from outside influence. To understand retraction in 3D printing, you need to know how it helps prevent printing faults and achieve high-quality prints. Nov 15, 2019 · PETG is a favourite in the world of 3D printing. Learn the best Ender 3 retraction settings! Oct 27, 2023 · The problem of a 3D printer failing to supply adequate material is called under extrusion, and it happens to all printer users from time to time. You can find some standard retraction settings for your extruder and 3D printer in places like user forums. Scroll to gcode generator Mar 17, 2024 · However, the proper retraction settings will vary from 3D printer to 3D printer. Simplify3D added a very useful feature in Version 4. Solutions for this 3D printing error: Dec 14, 2021 · The easiest way to fix stringing is by reducing your 3D printing temperature. Tools: Gcode generator on this page. May 29, 2023 · When your printhead moves from one point to another during printing, the heat of the nozzle combined with built-up pressure in the hot end results in some excess filament being forced out. Warping, also known as curling, refers to when your 3D print loses its shape from the material shrinking, effectively curling upwards or warping away from the print bed. Same problem. Aug 24, 2023 · Use this guide to help you identify and solve the most common issues that may occur while 3D printing. Oct 10, 2023 · Like many common 3D printer problems, stringing can be prevented with a combination of proper 3D printer maintenance and fine-tuning of slicer settings. Nov 22, 2023 · Retraction in 3D printing refers to the stopping point of an extruder between layers so no unwanted filament is distributed between these layers, preventing over-extrusion. This helps prevent excess dripping and ensures a cleaner print. 75 mm Layer height: 0. Minimum travel after retraction: Amount of move that will trigger a retraction (mm). Feb 23, 2024 · The retraction test is a calibration procedure that aims to reduce or eliminate the stringing and oozing problems that may occur during 3D printing. Jan 18, 2023 · Nozzle Switch Retraction Distance, Nozzle Switch Retraction Speed, Nozzle Switch Retract Speed, Nozzle Switch Prime Speed and Nozzle Switch Extra Prime Amount are all only relevant for 3D Printers with more than one printing nozzle. Lower the high printing temperature. Several retraction problems can lead to oozing or stringing, where small plastic strings appear Jan 19, 2023 · Click the leftmost panel, and click the Add Printer button. Oct 26, 2022 · Stringing is when small wisps of excess filament attach to the exterior of your 3D print, ruining the look and dimensional accuracy of the model. 190 degrees Celsius gave better result than 180 degrees Celsius. Mar 7, 2024 · It uses different levels of retraction distance and 3D printing temperature so you can see which one works best for your specific combination of 3D printer and filament. To keep things this way, we finance it through advertising, ad-free Feb 25, 2022 · Modix BIG-120Z 3D Printer Review; Sinterit Lisa X 3D Printer Review; Sinterit Lisa Pro SLS 3D Printer Review; Raise3D E2 3D Printer Review; Raise3D E2CF 3D Printer Review; Raise3D Pro 2 3D Printer Review; Raise3D Pro 2 Plus 3D Printer Review; Raise3D Released New Pro3 Series: Everything You Need to Know; Raise3D RMF500 3D Printer Overview. 2 mm Printing speed: 20 mm/s Travel speed: 250 mm/s. This leads to gaps, missing layers, thin layers and sometimes small holes in the print. Slicer Settings. This event is a form of over-extrusion and often leaves faint strings along the printhead’s path between points. 3D print stringing, also known as oozing or webbing, is a common issue that can mar the finish of your prints. When your printhead moves from one point to another during printing, the heat of the nozzle combined with any pressure in the hot end results in some excess filament being forced […] Stringing is a common problem regardless of the 3D printer or filament type you’re using. In the sections below, I’ll go over the most common issues on FDM 3D printers, such as the Creality Ender 3 and the Prusa i3 MK3S+, as well as how you can fix each Feb 20, 2024 · Filament grinding can be caused by a wide range of problems, from filament issues and incorrect slicer settings to mechanical problems with your 3D printer, In this guide, I’ll help you work out why you’re experiencing filament grinding, drawing on over 5 years of 3D printing experience Oct 21, 2022 · Check out our article on how to fix stringing issues in your 3D printer here. I printed 5 or 6 item without problems. Print Quality Troubleshooting Guide. Retraction Distance: 1. Michael has authored over 900 articles, helping millions navigate the exciting world of 3D printing. It’s so popular in fact that most 3D printers ship with a few rolls included in the box with the printer itself - further cementing its status as the ultimate “beginner’s filament”. Members Online I knew it was going to be a tight fit on the build plate but that toe is actually printed over the edge of the build plate successfully Dec 20, 2023 · Unlock the full potential of your 3D printing projects with Nylon – the robust, versatile material that outperforms traditional PLA and ABS in strength and durability. I then upgraded the printer firmware and since the retraction seems to be working incorrectly. Jan 5, 2024 · (Image credit: Tom's Hardware) You can begin with a lower retraction distance, like 2mm, print the model, and then check how it appears. Let’s jump in! 1. 5 mm to 8 mm. How to Fix Stringing on a 3D Printer With Prusa Slicer. Jan 19, 2023 · So, what can cause your 3D printer to under-extrude after a retraction? The primary culprit behind the occurrence of under-extrusion after a retraction is the usage of a Retraction Distance value that is way too high, which contributes to under-extrusion taking place by creating problems such as filament grinding and filament jamming. 1 mm until you find a sweet spot where no strings are noticeable. yfytgg bvfn sxli swnac zbnht gleix iunbow xoc tad pnj