on today's Makers Mashup part 1 of our 3d printer build series so today we're starting our DIY
series on 3d printers we're gonna be putting together each week different parts of our 3d
printer until we've got a complete build a lot of these parts are all going to come
from Thingiverse and you can 3d print those or the actual hardware parts like the aluminum extrusion
you'll be able to find links in the description for this so follow along with us and you will be
able to build your own 3d printer and if you need help along the way please feel free to join our
Dischord where you can find other makers working on this project and others to help you out with
your own 3d printer build alright so make sure you subscribe to follow all of the different videos
we reproduce in this series and let's get to work so let's review what we're going to be working on
today first we're going to review all the parts that we need for today then we're going to be
working on cutting our angle brackets for the build then we're gonna assemble our basic frame
and last we're gonna assemble the printer bed so these are some of the parts that we're gonna
need to get this done so let's review the list I will also include a complete list of materials
for today's video in the description of the video but let's go over it real quick we're gonna need
some 4040 extrusion then we're also going to need some 2040 extrusion and then we're gonna need some
2020 extrusion now you'll see that there's some odd sizes here we're gonna need two that are 220
long and then we're gonna need two that are 190 long these are pretty non-standard sizes so we're
gonna have to cut those ourselves and then we're also gonna use a pretty standard 2020 extrusion
length in 400 millimeters now my suggestion for all of this extrusion is to order it from
a place like Masumi you can actually order it considerably cheaper than amazon.com you may have
other locations but Masumi will actually cut it to the length that you need so you can get exactly
the pieces that you need to make this we're also gonna need 12 quarter plates now for all 12 corner
plates we're gonna manufacture those ourselves I have included a link in the description for where
you can purchase them but I think making them is considerably cheaper I went to metal supermarkets
which is a nearby vendor that has those they do have stores nationwide so you can get those metal
from there but any big-box store will also have it we're also going to need two 20 20 corner brackets
I ordered those from amazon.com and then we're gonna need a lot of five millimeter screws and
tea nuts again I'll include links for those in the description lastly we're gonna need a bed some bed
springs and screws these again were ordered from Amazon and links for those are in the description
so let's start a basic assembly for today our first step is to go ahead and manufacture all
of the plates that we're gonna need to assemble it so I've included the link to my other video which
covers this in detail essentially I've made all of the plates for this printer build you can purchase
these on Amazon and I did include a link to where to purchase them in the description they are
considerably more purchasing them from Amazon I can make them almost all of these for about $6 and
they run $14 for about four of them on amazon.com once you have all your brackets paid then the next
step here is to use our five millimeter screws in our tea nuts and get all of these plates set up
to assemble the frame so the first thing we're gonna want to do is measure the exact center
on both sides of your 4040 extrusion we want to mark exactly where the middle is and then that
is where we're going to add the 2040 extrusion the 2040 will line up a right in the center of
that line and you can see here the center of the track is right on that line now we're going to
use our corner plates and you simply insert these directly into the extrusion and then you're gonna
want to tighten them up one recommendation I can make here is that if you tighten the end nut so
the one on the top or the one on the bottom it will be helpful to get this perfectly aligned
as you can see here my nephew struggling with it a little bit but eventually he gets it lined up
and the plate on there perfectly a good tip when twisting these on is to use a quick twist action
if you twist it quickly you'll find that the nut actually twists if you do it slowly then the nut
will often just stay in its current position so a quick twist to additionally start will get that
in T nut to lock into place now once it locks into place I suggest tightening them all down
and then doing your final tightening and remember not to over tighten these this is aluminum so if
you twist these steel screws hard enough you will actually bend your aluminum so remember you want
it tight but you don't want it so tight as to actually bend your aluminum once you have both
sides assembled it should resemble an upside-down tee and you'll see here that I have these plates
assembled so that way they're both facing the same direction it's critical that those bonding plates
are facing the same direction as we're gonna have to put the stepper motors here for our z-axis now
once we've completed that we're gonna assemble the 24 T extrusion on the ends of our frame you
see we're using the same bonding plates that we used for the uprights we're gonna be using to
attach this 24 t to the front and back of the frame once you have everything snug make sure
that you go ahead and make sure that things are flush here you want to make that so that way the
plate and both the extrusions are flush with each other so that way you keep your tolerances across
everything on the printer once we have the front and the back in place then we're gonna be ready
to move on to the top crossbar the crossbar is assembled with these 20 20 angle brackets you
simply put the screws and the nuts in both ends of this and then these will join up against the 20
40 and the 20 20 at the top you want to make sure that everything is flush once you get things snug
and to put these in you're simply going to insert them and then tighten them up slowly once you get
them into the extrusion once you have them snug with a screwdriver you're gonna want to tighten
these with an allen wrench so you can get into this tight space then just repeat this for the
other side once the other side is complete your should look something like this so at this point
you should have the entire frame built as you can see here we used all of our corner brackets which
we made ourselves we've used the m5 screws to put everything together we have our top bar on
here and we use 40 40 down below 20 40 for the uprights and then the crossbar here is 20 20 and
as you can see this is a solid printer a lot of different printers that you find out there acrylic
or otherwise I guarantee you couldn't apply this sort of stress to so we have a solid frame
for our printer we're gonna continue out the next steps right now this step simply requires for you
to use the 190 millimeter extrusion and that goes on the inside of the 220 millimeter extrusion and
once again you're gonna attach it here with the corner brackets and our m5 screws have it assemble
we're gonna want to take our print bed and then you're gonna need to mark with a pencil exactly
where each one of these screw holes line up in the tracks and then what we're gonna do is we're gonna
take that to our drill press and we're gonna go ahead and drill some holes each hole should
be drilled in the center of the track right where you have each dot apology's I did forget shoot the
video of the actual drilling of the holes but as you can see here the holes are right in the center
of the track and we are just using the printer bed in the screws which I've linked in the description
to put the bed on here and this is just temporarily to hold the bed on here we're gonna
add some washers in another step of the video but this gets our basic printer bed ready to go
so now we should have our printer bed fully assembled as you can see here we just use nuts
so this was to just get our bed put together the way that this is actually gonna work is we will
go ahead and put some thumb screws on there but I wanted to assemble this because at this point you
can see that we have a 3d printer bed it didn't require any sort of special cutting of aluminum
we used our 2020 extrusion and of course our 20 by r2 20 by 220 bed we just use our drill press
to put some screws into this and we'll have once we tighten this up some solid ready to
go bed so we're going to put this aside for now but I wanted to illustrate that we have already
some of the key components put together for our printer the next good set of videos we're going
to actually start working on our motion system so our motion system is going to be using some
rods and we're just going to be using some dryland bearings we're not actually going to
use any ball bearings for this there's a lot of people that prefer one versus the other in this
particular case I think it makes it easier for the project and lower overall costs or
any use of dryland bearings here and a bearing mount that hooks right to 2020 extrusion that I
developed myself so that's all going to be in our next video so we'll see you next week and
we'll start working on our motion systems and we'll get that all into a place so thanks for
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