one of the most critical parts in 3d printingis getting a good first layer. having a great first layer sets up an awesome foundationfor the rest of your model and saves some problems later in the print. now lets lookat some of symptoms of a poor first layer and how to fix it. assuming youir nozzle andbed temps are correct for the filament you're using lets start with the problem of liftingor curling. the most likely reason is that the nozzle is too far from the bed or thatyour bed is out of level which causes the nozzle to lift as it travels. the resultingfailure will look something like this, notice the gaps between the filament? try levelingyour bed and zeroing your nozzle again. you want it nice and close to the print surface,about the thickness of paper. it might also
be the result of uneven cooling or a breezeon one side of your model. even a person walking past the printer can be enough to cause anabs print to start to shrink and lift on one side. get something to shield your print frombreezes - some cardboard sheeting or even a piece of paper will help. it could alsobe that the filament just isn't able to stick to the bed, an effective and easy bed adhesiveis simply glue sticks. get either elmer's disappearing purple or uhu white, you canalso use masking tape, kapton tape, abs slurry and also maple syrup. yes i'm serious, youcan use maple syrup, makes for some sweet prints! especially with smaller nozzle diametershaving a thick first layer is essential. a sparse first layer will look very similarto the nozzle being too far from the bed - like
this. to fix check your e-steps to make surethe printer isn't underextruding, or within your slicing software increase the filamentextrusion just for the fist layer. a rough first layer is usually one of two issues,either your nozzle is too close to the bed, causing the filament to be squished and spreadas the first layer goes down or it's because there's just too much filament being extruded.if you notice your extruder skipping like this... then chances are your nozzle is justtoo close. start by recalibrating your nozzle height again and aim for that paper-thickgap. once that's set check your extruders e-steps and make sure you're not overextrudingfilament. finally just reducing the extrusion on the first layer within your slicing softwarewill help greatly. while it is better to slightly
too much than too little, the amount of filamentshown here is just way too much and will most likely cause a failure if left. one of themore interesting first layer issues looks like this, you'll see some strange shapesappearing within the model. this is most always caused by a mesh error within the 3d modelitself and it's not uncommon in models downloaded from the internet. to fix this you'll needto open the model with 3d modeling software and carefully look for the mesh errors, ifyou're not familiar with 3d software this is going to be a hard problem to fix unfortunately.hey thanks for watching, hopefully that covered
how to finish 3d printed parts,most of the first layer issues that you'llrun into, if there's another video that you'd like me to make, just leave a comment below.and finally, what do you give a 3d printer with bad breath?
filamints! seeya! (musicby popcorn, mindless video of me making mistakes while filming...)
