![]() ![]() You got yourself a Prusa i3 Mk3s+, one of the best printers on the market. The minimum travel distance is usually 1-2 mm, but you should adjust this value by 1-mm increments if you have issues.So, you’ve decided to invest in a 3d printer. While a larger minimum distance increases the likelihood of stringing by preventing retractions from transpiring, it reduces the chances of a nozzle clog. This setting is especially useful if you’re printing a model with many close-by separate locations where retractions could occur, like a hairbrush. This is achieved by requiring the nozzle to move a certain distance before it’s allowed to perform retraction again. ![]() The minimum travel distance is the last important retraction setting we’ll go over, and it controls how frequently retraction occurs in a specific area. This constant reversal of the filament motion increases the chance of a nozzle clog significantly, and that’s where the minimal travel distance setting comes in. If two retraction movements occur close to each other, the filament is pulled back, extruded, pulled back, and extruded again, all in a short amount of time. Minimum Travel Correct retraction settings can avoid messy cleanup (Source: Hobby 3D Printing!) If this value isn’t working for your printer, try adjusting the speed in 5-mm/s increments. For reference, your slicer’s default retraction speed will likely lie between 30 and 60 mm/s. Ideally, you want to use the fastest functional speed to reduce stringing and print time. On the other side of the spectrum, too high a speed could cause a number of problems, including breaking the filament inside the hot end, and you may still experience stringing. ![]() That’s because a slow speed won’t relieve the pressure fast enough to prevent excess material from exiting the nozzle. This setting is very important because it can influence print time as well as how effective retraction is at eliminating stringing.įor example, if your retraction settings effectively eliminate stringing with a distance of 5 mm and a speed of 40 mm/s, you may experience worse results with the same distance and a speed of 20 mm/s. Retraction speed is the other important retraction setting, and as you might have guessed, it determines how quickly retraction is carried out. Speed Too much speed can cause problems (Source: _Deornoth_ via Reddit) If you want to adjust the retraction distance, try tweaking the default in 1-mm increments until stringing is eliminated without any clogs or other problems. If you raise the value too much, the filament may retract too much and cause a hot end or nozzle clog.Ī typical retraction distance ranges from 2 to 7 mm, but this value depends on your extruder configuration ( direct drive or Bowden), hot end, and other factors there’s no one perfect value. Yet, if retraction were this simple, everyone would use the highest retraction value, but this is not a good idea. The longer this distance is, the more time a retraction might take depending on the speed, but also, the less likely you are to experience stringing. Looking first at the former, retraction distance is the length of filament that’s pulled back by the extruder every time retraction occurs. Of the available retraction settings, perhaps the two most important are retraction distance and retraction speed. ![]()
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