3D Print Stronger Parts! 3D Printing 101 Video Lecture | What is 3D Printing: Basic Knowledge - IT & Software

you hear it all the time 3d prints are
weak they're simply not suitable for
functional everyday use and while it is
true that other manufacturing
technologies such as injection molding
do produce stronger objects there are
many different settings you can tweak in
your 3d printing slicer to produce the
strongest parts possible on your 3d
printer so in this 3d printing 101 let's
cover them and put them to the test
let's get started
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here is the part that we'll be
conducting our tests on it's a mount for
my cordless drill that sits on the edge
of my workbench the drill is fairly
heavy and this mount is going to see a
lot of abuse so I want it to be as
durable as possible and this is the part
I printed on my usual settings it prints
fairly quickly and uses a small amount
of material however this is not a very
strong part it works but as you can see
any sudden loads it starts to fail and
delaminate and as you may recall in a
previous 3d printing 101 that we
explored 3d printing orientations to
improve part strength but in this case
we still end up with a part that just
isn't tough enough even if we use the
optimal orientation so what settings
should you change to improve your part
strength some of you may dive straight
into increasing your infill percentage
and while a higher infill percentage
does contribute to a stronger part it
isn't the full story
think about how a pipe can be almost as
strong as a solid bar the part strength
is mostly influenced by its surface so
with that in mind the first settings
will change influence health pick the
skin of our part is so I'm gonna change
our parameters from 2 to 6 and our top
and bottom layers from 3 to 6 also this
means our 3d printer will trace around
the outside of the part many more times
than it did before resulting in a
thicker surface of the part and greatly
increasing the part strength it's really
important to note here that changes
these settings will not affect the size
of your part this is a very common
misconception so if your part is say 50
millimeters in diameter it will stay
that way because of how many perimeters
you give it a next week is to our layer
height so when a 3d print fails it
almost always does between interface of
two layers this is where the molten
plastic has to adhere to the previous
chord layer and it's kind of like a wood
grain it's the weakest part of a 3d
print with that in mind you can make
your print stronger by slightly
increasing the thickness of each layer
serves less interfaces for example here
we're increasing our layer height from
0.15 to 0.25 millimeters there is a
downside to this change which is the
printers accuracy the stepping between
layers will become more pronounced when
increasing the layer height
for this print we want to increase
strength so it's a pretty fair trade-off
it's also very important to note that
you can go too far with this never
exceed your nozzle diameter with your
lair height or your part will just fall
to bits as I'm using a zero point four
millimeter nozzle here 0.3 millimeter
layer Heights would probably be as
coarse as you should go similarly we can
increase our extrusion width which will
produce thicker lines overall is more
plastic comes out of the nozzle at once
here I set mine to 0.55 millimeters from
a zero point four millimeter nozzle
versus the default of zero point four
eight you can also increase your
extrusion multiplier to extrude more
material overall but be warned if this
is too high you might seriously degrade
your print quality so here I'm hoping to
increase it too much I'll go from zero
point nine to one one final tip to
squeeze just that little bit more
strength out of your parts is to
consider increasing your print
temperatures slightly this can
definitely help the layers of the print
bond together more at the slight of
expense of detail being resolved so
don't go overboard you may increase
losing or stringing with increase of
temperature here I've changed from 109
degrees which is standard PLA printing
temperatures to 205 and as an
interesting side effect my black PLA
started looking satin which is actually
quite a nice finish
we've changed loads of settings to make
our prints far stronger than the
original but there's one last thing you
really should consider which is our
infill overlap percentage this changes
how far you info overlaps the perimeters
of the print so if you're finding your
infill is coming away from the inside
phases of your print then definitely
change the setting because it's not
doing very much good if it doesn't stick
however I wouldn't recommend touching
this if you're in fill all ready bonds
correctly because there's no point in
messing with success so let's put our
prints to the test as you can see here
the increased strength part is far
superior in terms of durability then our
original it did use more plastic and
ways a little bit more but really you're
going to end up with a part that can
stand up to everyday use and you're
going to get a part that's going to last
me for quite a few years and helps keep
my cordless drill in an organized
fashion so thanks for watching guys and
I hope you found this video on making
stronger 3d printing parts useful as you
can
simply increasing your Enfocus edge is
not the whole story
there's lots of things you can change to
get a far superior strength part of your
3d printer a big thanks to simplify 3d
for sponsoring this episode of 3d
printing 101 on making smooth if you
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101 in a huge playlist to get you up and
running in the wonderful world of 3d
printing happy printing guys I look for
to see you again very shortly catch
letter bye
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