How to Fix Stringing on a 3D Printer

so today we're gonna be talking about stringing so the first question is what is stringing well when you look on Google what causes stringing in 3d printing we can see that stringing is usually caused by the print nozzle losing print material as it moves from one place to another what that means is that while your nozzle is in mid air it is oozing plastic in places where it is not supposed to use plastic out meaning this cause is a string from one point of the plastic to another point and that is what stringing is so in this video today we're going to see how we tackle this how we can perfect this and how we can overcome this problem so I started with the main thing that causes stringing on printers and that is temperature it isn't retraction settings it isn't any of those things what causes stringing mainly is the temperature so you all see in front of you right now are two columns and this column is divided into blocks and each block correlates to a temperature that you need to set your extruder to and as you see from my testing once it gets to around 190 180 degrees the stringing is so minut and so then that this practically doesn't harm your print at all so now that we understand the difference between the strain when it comes to temperatures let's take two poles and print them on the default settings on our Prusa slicer so we're gonna take the file put it into our slicer and we're just gonna do this with the default settings which is 215 degrees and we were just gonna export it just so that we have a reference to our next pulls that we're gonna be making we're gonna export this and we're gonna move it on to our desktop we're gonna save it there we're gonna replace the file and now we're gonna go get our SD card from our printer so let's go do that right now [Music] [Music] [Music] now that we're done with that we're going to move our g-code file onto our SD card and we are gonna print it up as you can see this is our results and they are not very good there's a lot of strings this was printed on 215 degrees Celsius not a lot of lumps over there but we do have a lot of stringing but you can see there are some lumps in the middle of it so we're gonna look over here and I'm going to move this over here for a time-lapsed and I'm going to be making for this and we're gonna go into filament settings no sorry printer settings and we're gonna be going into extruder on the side and what we're going to be doing is we're gonna be changing the length you guys could see retraction over here we're gonna be changing the length of the retraction what this means is how much the printer will be pulling the filament back out of the nozzle so we're gonna set that to two millimeters and then we are going to set the retraction speed retraction speed is how fast it will be pulling out these two millimeters that we set it and we're going to set this to a hundred faster the better and then we're gonna do retract the mount before wipe so what happens is your printer actually wipes the nozzle before it moves so we will want let's retract some of the filament of the two millimeters that we're going to be retracting we're gonna retract 50% of that and yeah let's see how this goes export the g-code save it place the file pull out the SD card put it in the computer drag the file into the SD card place the destination pull out the SD card put it back into the printer and print and as you see these are the results of the second print stringing looks very different from the first but still we don't have great print and I think this is to do with the temperature so let's go back and lower the temperature so what I did is I went back and I set the retraction settings to their default because I wanted to just lower the temperature see how that comes out and if I need retraction I will use retraction for my next print and this is just to give you guys a little look to see what's the difference between 100 and 90 degrees to 215 what we just did and also it's so that later I can show you guys the difference between 190 and 190 with retraction on export the g-code save it replace the file pull out the SD card put it in the computer drag the file into the SD card place destination pull out the SD card put it back into the printer and print the print came out okay still a lot of stringing but this string is very very thin and could be removed very easily oh wait my bad this was a failed print let me show you the one that actually worked [Music] so now that we got to this point to the stringing video I'm gonna show you guys the settings that I personally use for my stringing and I recommend everybody else to use those when you're pregnant with PLA not further ado let's do that hello everybody I'm gonna show you guys my settings for printing so go into printer settings pressing extruder 1 and on the length I put it on to two point zero becomes lifting I turn that off I do not want to lift there is no need to touch the retractions speed in my eyes I think that that is just fine and the retract the mount I bump it up to 25 and that's pretty much the settings I use other than that I also go into the filament settings and I switch the temperature to 195 for the first layer and to 195 for the second layer those of you who might want to use a higher temperature for the first layer just for better adhering to the bed you can do so I just find that the glue stick works just fine to stick my prints down to the bed so that's pretty much my settings and let's see how this prints export the g-code save it replace the file pull out the SD card button in the computer drag the file into the SD card place the destination pull out the SD card put it back into the printer and print all right so as you guys could see there's a huge difference so retraction really does work but again you can see that stringing is mostly caused because of the temperature which is why I would recommend whenever you get a brand new filament from some different company that you don't know always just print up the temperature thing just so that you know where your filament is better and where it's weaker when it comes to stringing just for the fun of it I printed up another one of the temperature columns but this time I did it with my retraction settings and I'll show you guys the results it's not amazing but as you see it's a it's a there's less stringing but there's a lot more Gump's clumps whatever you could see over there yeah so that's pretty much the results I hope you guys enjoyed this video if you like this content please subscribe this will really help me if you guys subscribe as you see I just started my YouTube channel and I need all the help I can get so thank you very much and I hope you guys all have a great day

Channel: kalmanf

Views: 124,724

Keywords: Prusa i3 Mk3, Stringing, 3D Printer

Id: SP5ukPucHtY

Length: 9min 56sec (596 seconds)

Published: Wed Jan 23 2019