Hey everyone Patrik CK here and this is episode
two of 3d printing with the monoprice maker
select v2.
Last time I showed you how to assemble the
printer and then printed a random model that
came preinstalled.
Since then I did get a replacement printer
that didn’t have a broken screen, assembled
it and printed another random model, this
time it turned out to be a butterfly.
In this episode I’ll be going through creating
and printing the first of my own 3d models.
Now if you want to do something more than
print the models included with your kit you
are going to need to get into using computer
assisted design programs.
Again one of the reasons I bought the maker
select is that is doesn’t have proprietary
design and encoding software.
This means you can use pretty much any 3d
cad program that allows you to save into the
format that the printer can read which in
this case is GCode.
I was really looking forward to this specific
feature because it means I could possibly
use Google SketchUp to create my models.
If you are not familiar to Google SketchUp
I would definitely check it out.
It is an amazing CAD program that is incredibly
easy to learn and allows you to create pretty
much anything your imagination can come up
with.
Even if you don’t have a 3d printer but
are interested in making 3d models I wouldn’t
hesitate to start playing around with it.
SketchUp was released back in August of 2000
and that’s pretty much how long I’ve been
using it, of course until now I would just
use it to make completely random things like
space ships, floor plans, satellites, furniture,
etc.
But now it’s time to make those models come
to life!
Before I started on this project I wanted
to make sure I could create and export models
in the right format.
Unfortunately the basic free version of SketchUp
does not do this but luckily thanks to the
amazing SketchUp community there is an extension
that will allow you to export models as STL
files.
I know this isn’t gcode but it’s a step
in the right direction, we’ll get to the
gcode part in a second.
It’s extremely easy to install the extension,
simply go to the link in the description and
down load the RBZ file.
In SketchUp 2017 go to the Window menu and
select Extension Manager, when the new window
pops up click the button at the bottom that
says Install Extension and simply select the
RBZ file you downloaded.
That’s it!
The extension is installed; it may give you
warning saying the extension is unsigned but
you can ignore it.
These steps are different for older versions
of SketchUp so I would highly recommend updating.
Now go ahead and create the new model.
Since I’m new to the world of 3d printing
I wanted to keep it simple but I also wanted
to do some testing to see the limitations
of the printer, so I went with a design like
this.
A couple of things I wanted to test was how
well the maker select would recreate this
large swooping curve and how defined the lettering
would come out in the final product.
As you can see some of the letters are raised
while other are recessed.
I thought this would give the final product
an interesting shadow affect under certain
lighting.
Make sure to clean up any faces or stray lines
that are not needed, to make sure the final
format is easy to interpret for the next step.
The overall dimensions of this model are 3
quarters of an inch in width, 3 and half inches
long and one and half inches tall.
Using inches was an oversight that will come
back to mildly annoy me.
With the model done in SketchUp we first save
it into the native SKP file format for future
edits, then to use the extension we installed
earlier go to the Tools menu item and select
Export to DSF or STL.
In the first dialog box you can tell it to
save the entire model, hopefully you got rid
of any stray elements in the work area.
Then since I used inches, I’ll export it
in inches.
In the next window select STL from the drop
down menu and finally save it to whatever
directory is good for you.
So now we have an STL file which basically
represents all the faces of the model we just
made.
Now it’s time to make that STL into a Gcode
file that the maker select can use.
This step is really simple.
We need to download and install a program
called Cura.
There are plenty of other programs that can
do the same job but since it was recommended
by Monoprice and is really easy to use not
to mention free, it’s a no brainer.
To get Cura you can use the link in the description
or simply Google Cura CAD program, which will
bring up the Ultimaker website, the creators
of Cura.
After you download, install, and open it up
for the first time Cura will ask you what
printer you are using.
Since the maker select is not listed just
choose Prusa i3 which is the printer that
the maker select is based off of.
The nozzle width, bed and extruder temperatures,
print speed, etc are all the same.
The only difference is the work area.
The maker select’s print area is a bit bigger,
another selling point, I haven’t figured
out how to change this since the printer settings
are fixed.
It’s not a problem in this case because
the model is not that large.
To import the model just select the Open File
icon in the top left and find your STL file.
This is where using inches to build the model
came back to annoy me.
The default measurements for Cura are in millimeters
so the model came in at 3 quarters of a millimeter
in width which is really tiny, I thought it
didn’t even import until I zoomed ALL the
way in.
I haven’t figured out how to change this
default measurement yet.
If you know how please leave a comment and
thanks.
This wasn’t as big a deal since all I had
to do was use the scale tool to enlarge the
model so that it would be 19.05 millimeters
in width which is equal to 3 quarters of an
inch.
Then I centered it and that’s pretty much
it.
Of course you can mess around with all the
settings for the model and printer but for
this test I just left everything at default,
with a light infill and normal quality.
I really like that it tells you how long it
will take to print and how much filament it
will use.
For my model a little over 1 and half hour
to print and 3 and half meters or 11.7 feet
of filament.
Just as an example if I were to set the infill
to solid, in other words make it a completely
solid object it would take 4 hours and use
almost 8 meters or 26 feet of filament.
That’s pretty insane.
Here are the last two steps, first save it
as a Cura project locally than click on save
to file button on the bottom right and select
the Gcode extension if it is not already selected
and save it with the an easily recognizable
name.
If you have the micro SD card plugged into
your computer save it to the home directory,
otherwise just copy it over when you are ready.
Now it’s time to print this thing.
Preheat the printer, mount the SD card, select
the file to print, and sit back and watch
the magic!
To be honest I had no idea how this would
turn out.
I wasn’t sure if the printer settings would
be 100% or if having the model be interpreted
by two different CAD programs using three
different file extensions would cause any
issues.
At this point I couldn’t do anything but
wait.
I’ll speed it up.
Of course my old GoPro died twice on me.
It’s definitely taking shape and I like
what I’m seeing.
Here is the final product and I’m very happy
with it.
Of course it’s my first model and it didn’t
completely fail so I’m excited either way.
A couple things I did notice is that at the
lower part of the curve where the gradient
is shallow you can see the “step” pattern
but I actually don’t mind because it does
smooth out further up the curve and a little
sanding will smooth it out more.
The one more noticeable thing is that the
letter K is not as recessed as it was modeled.
Not sure if I could have done something different
to the model to make this part turn out better
or if it’s a limitation in the level of
detail the printer can create.
More testing is in order for sure.
Well that is it for episode 2, I’m really
excited to keep exploring the world of 3d
printing and to bring all of you along with
me.
I’ll be doing some more testing over the
next couple weeks.
Next time I’ll work on some practical models
that I can use around the house or at work.
This has been Patrik CK, like and share if
you enjoyed this content.
Subscribe to get more videos when they come
out and hope to see you all next time, thanks
everyone!
