hi in this video we will be addressing thecommon print problems of blobbing and stringing like this. but before we begin check out this video onextrusion rate because this setting alone affects somany print issues also some of the topics in this videowe've covered more thoroughly
pla or abs for 3d printing, check out the links below okay let's go! extrusion rate is the value whichdetermines how much filament is coming at the nozzle. you want theextrusion rate to match what your printer is expecting
otherwise you'll have over extrusion whichcan lead to blogging and stringing or under extrusion which can lead toharder drugs, a life of crime as well as weak prints which is evenworse. if you're unaware whether your extrusion rate is correct now is the time to watch this videowhich we mentioned in the intro generally with any filament the higheryou raise the temperature the stringier it will get. in short ifyou find your prints are really stringy try dropping the temperature here's aprint with identical print settings except we've got the temperature by 10degrees.
notice how the stringiness has been reduced be careful not to print too cold though, thiswill produce weak prints and nozzle jamming retraction is the amount that theprinter will rewind filament after it finishes a section printing.there are usually two values which need to be adjusted retraction length and retraction speedboth values will affect the end result however retraction length is the mostimportant one to adjust first since low values produce excessivestringing while high values can cause jamming to tune your retraction print the filethat i've linked below you don't need to print the whole model just let it run enough to observe the stringing
if you see lots of stringing stop theprint and reprint it with increased retraction keep reprinting and adjusting retractionuntil you see improvement when you no longer see improvement withlarger retraction values begin adjusting the retraction speed. lowspeeds around 20 millimetres a second might begood for pla to prevent jamming in some situations however 60 millimetres a second is abetter all-around speed for most filaments so don't be afraid to increase it untilyou start seeing negative effects on your print if you don't see any improvement thenretraction
may not be the issue or you pushing thelimits of your hot-end if you simply cannot eliminate stringingit might be worth upgrading your hot-end i've linked to my favorite hot-ends inthe description below. hey thanks for watching
i hope this video was helpful if youlike the video consider subscribing otherwise leave usa comment below and let us know what topics you'd likeus to cover in the future bye bye!
