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Hey guys, TechNibbers here.
This is my Anet ET4.
And you know, for being a budget printer,
it's got some additional bells and whistles
that most of these other cheap end printers
don't really have.
So, today we're going to take a look at one of the features
that comes built in stock to this bad boy.
And that feature is...
The filament runout sensor.
Now, it's easy to add a filament runout sensor to most printers,
but this one comes built in
and as I said, this is a budget printer.
It costs around $200-$230.
So, for it to come with that already
is pretty amazing. Let's take a look at it.
Now, obviously I am going to show you the actual
mechanism itself that is
the filament runout sensor, but
a lot of people ask, how does the filament runout sensor work
and what is it?
So, basically, the component that you're talking about
is just one of these.
It's an end stop
or a switch
that controls
an on or off, basically.
So, this being used
as the end stop, when the X carriage comes over
and hits it, it is depressed
and you can hear a loud
clicking.
So, this lets it know it's reached the end of
the motor there.
It's basically either on or off.
Basically, what a filament runout sensor is
is one of these in a chamber that's about as wide
as the filament
and as the filament presses through, it pushes
that lever down.
Now, when the filament runs out
and passes the lever because the extruder
is pulling it,
the button pops back out
and the sensor goes to its
other position.
So, say this is true
that the button is depressed
and now it's false. When the computer
gets that signal, it knows you're out of filament.
So, it's a very, very simple
solution to a problem
and they are very, very common.
What is not common is for them to come on
a stock machine that's this cheap.
So, let's go around to the back of the printer
and take a quick look
at the actual sensor itself.
Here we have the
actual filament runout detector itself.
It is right here. As you can see,
it is a printed part.
Anet is notorious for putting printed parts on their printers.
This printer here
actually only has two that I found, which
in my opinion is a good thing. I like that it's a little
bit more solid built than most of their printers.
But, you can see
it has these two machine screws
in the top, which are actually holding another one
of these limit switches.
That is facing this way, so when I feed it through
it depresses that lever
and then when the end of the filament
feeds through the filament sensor
and gets to here, that lever will
unpress or
release and basically
trigger the filament runout sensor, which will
cause the machine to pause.
In that manner, you can
save a lot of filament on
failed prints. You can reuse
spools, use the ends of spools and it will
stop when it runs out and then you can switch to
the next spool, which will
save you a lot of headaches in the long run and it's
just an awesome addition
to a stock printer.
Normally, it is a very
simple thing to add to most 3D printers
and if you don't have one, I highly recommend it.
It will keep you from having to
monitor the machine constantly and
as I said, save you
from a few failed prints
because of runouts. Now the one thing the runout detection
sensor won't help with
is a knot in the spool.
So if you don't properly maintain your
spools and prevent them from
weaving under other lines
and getting knots in them,
this sensor is not going to help you. It actually
has to run out of filament in order
to detect a filament error.
It is a very nice addition
and I am glad that it came with
this machine, especially at such a budget
price.
That's basically the gist of it. It's a very simple
piece of equipment that works very
well and will save you
frustration, monitoring time
and probably
more than a couple
failed prints over your career of 3D
printing.
So far, so great. This machine has been running
really well. I am enjoying
it. It is
an A-net, take that as you will,
but it is also
super duper quiet and we will
talk about that in another one of the future videos.
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TechNiverous out.
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That's going to be it for this video.
As always, I am TechNiverous
and thanks for watching. Don't forget to check out
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