Transcript


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now you new to 3d printing maybe just
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bought your first under three or you
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gonna get one for Christmas let me show
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you how to level your bed the most
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important thing you need to know when
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you're getting started with 3d printing
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I'll show you an easy way to do it right
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here a filmer friday filament Friday is
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sponsored by my patreon supporters the
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most important thing you need to learn
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when you're getting started with 3d
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printing is to get a level bed when your
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bed is level that means the position
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between the bed and the nozzle is the
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same no matter where that nozzle is
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positioned now you can never get it
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exactly perfect because every bed has a
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low spot or a warped spot no matter what
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you use the stock bed this is a flexible
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bed on the under 3 Pro I put a glass bed
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am i under 3 cuz I like printing on
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glass and you tend to get a little more
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level when you do use glass but it's the
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same technique no matter which one you
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have and no matter which printer you
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have although I'm going to show you here
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on an under 3 now what I've included in
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the description below are a link to a
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Thingiverse location where there's two G
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code files I recommend you download one
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is a g-code file that will position the
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head at five different points on the bed
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and then at each point you slide a piece
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of paper underneath it and adjust your
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bed until that piece of paper hardly
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moves now I like to use a filament
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Friday sticker because it gives me two
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levels of adjustment one as a sticker
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and then I peel off the backing and I
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have a second one slightly thinner for
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the second go around if you want a
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couple of these stickers there's a
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address in the description below send me
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a self-addressed stamped envelope and
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I'll send you two of them for free so I
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use this to position it and to get that
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perfect distance so let me run the first
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g-code which positions the head and I'll
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show you how it works and then after
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that I'll show you the g-code to print
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this test file so you can get that
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perfect print all the way around and
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then you know you're ready to get your
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first prints going on your new under
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three or your existing under 3 download
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the files from Thingiverse
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on to your SD card and then run the chip
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under three bed level dodgy code the
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machine will home itself and then moved
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to just above the first adjustment screw
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now you take your piece of paper or fill
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in a Friday sticker slide it in under
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the nozzle and then adjust the bed until
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oh just a slight resistance on the
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sticker then you hit the button and
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it'll move to the back corner then you
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do it again adjust the adjustment screw
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until that sticker or piece of paper
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barely slides out as you feel
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significant resistance and then you do
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this at each corner press the button
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it'll automatically move and then you
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get all four corners when you press the
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button again
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it'll move to the center when it gets to
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the center you can do the same thing rub
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the paper or sticker underneath it but
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when you adjust it you have to just all
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four wheels equally mine felt pretty
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good so I left it now when you press the
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button it's gonna go to the back corner
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but I'm gonna use the back of the
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sticker which is a lot thinner and then
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I read just adichie I was really close
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to the bed once that was done the last
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time I hit the button it's done and it
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homes itself again now you want to start
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the square bed level test at g-code and
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make sure you had some PLA loaded before
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you do this and it'll start printing its
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squares now the trick is to rub your
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finger on the bed see if you can knock
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it off then these are very thin lines so
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it's pretty easy to knock them off if
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it's not sticking to the bed so here
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look at I could knock that corner so
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that corner needs to be moved closer to
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the nozzle if you move a clockwise it
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moves it closer to the nozzle if you
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move a counter clockwise it moves it
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away so I just keep adjusting that until
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I get each corner right now if I ever
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see it very dull or not printing at all
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then I know I went too far and it's too
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close to the nozzle but you just let it
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happen for each square keep checking it
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and you will slowly tune this guy right
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in once we get this done then we can
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just remove them all and start over
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because now our bed should be adjusted
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properly
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so just easily remove all the strings
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from the bed now you could just this is
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a flexible plate you could just pull it
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off and peel them but anytime you remove
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it it can affect the bed level so it's
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best to leave it there so we're gonna
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run it again now that I've had
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everything adjusted and I can easily rub
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this and it's not moving so this is
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looking really good so I let this run
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until all the squares are printed and
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then it'll print multiple layers so once
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the first round of squares is printed I
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stop the print you can keep it going if
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you want but I just stopped the print
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and then from there I check it and this
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looks perfect so now I'm gonna test it
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by printing an actual print I'm gonna
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print a bench E but only the first layer
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so prints the first layer I hit stop and
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then I can look at this up close and you
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can see I got it good because the
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lettering is coming out perfectly it's
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got all the spacing and I can easily
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read it I'm take it off the bed look at
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that it's almost a perfect layer I got
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some gaps around the edges but that's
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the slicing because I didn't do enough
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overlap and this is a square this shows
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you the difference I started out pretty
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good
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then I adjusted too close because it
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quit putting plastic down there's a gap
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then I got it back to good then I
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adjusted it too far away that's why it's
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sagging and then I got adjusted good
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again and then I printed another square
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and it's perfect other than this lower
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left-hand corner that's about as close
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I'm gonna get so this thing is ready to
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print so that's an easy way to use the
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g-code to set up your machine and the
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g-code to run a test print now you don't
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have to run that test print every time
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you get pretty good at that live adjust
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and you can just do it with the print
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that you're working on the print you're
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gonna make just like the bench e I could
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lay that pinchy down and then look at
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and say now I need to tweak it stop the
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print start it over again get that first
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layer just right just by tweaking the
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knobs and then let it run but if you
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have a removable bed like this every
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time you remove it and put it back you
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take the risk of throwing things off and
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if you ever have to clean your nozzle or
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take that off for any reason you're
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gonna have to readjust the bed so it's
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good to have a technique to get it back
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into
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and this is an easy way to do it so
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that's it for this week and I hope this
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helps you get started with 3d printing
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and get that first layer down just
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perfect so if you like what I'm doing
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here maybe check out some of these other
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videos that are popping up people want
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to help support the channel you can
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support me through patreon if nothing
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else click on that Shep logo and if
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nothing else you're going to be doing
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some shopping this Christmas season use
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my affiliate links are in the
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description below it really helps I'll
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see you next time right here at filament
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Friday



https://www.youtube.com/watch?v=_EfWVUJjBdA&t=1s
Download all the files for this video here (this replaces thingiverse): https://thangs.com/m/51868
(For new machines use the M25 version)

https://thangs.com/m/51868