WEBVTT

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>> This is a tutorial
on Lab number 11,

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Primary Auxiliary Views.

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Here's the figure given.

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We're given the front view
and the right side view

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of this object, and we're asked

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to create an
auxiliary view corresponding

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to this auxiliary reference
plane, or ARP.

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So, since it's projected
out in the front view.

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This is the front view.

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This is a type of
the auxiliary view.

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So, the depth measures away from
up here from the right side.

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You should be the same depth
that we're going to use

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to locate the points in
the auxiliary review.

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And starting with this very
distinctive plane here.

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One, two, three, four,
five, six, seven.

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One and two are here.

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Three, six, and seven
can only be here.

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And four and five
long these lines.

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I've labeled those points.

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And now I'm going to project
them using construction lines.

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I'm going to copy this
construction line perpendicular

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to the ARP from its
current location

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to the locations pointing to the
points one, two, three, four,

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five, six, seven on that plane.

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And focusing on that plane.

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And then I'm going to
borrow or measure the depths

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from the frontal plane
by using off set.

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So, for point one, for instance,

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point one is form
this intersection

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to this intersection
or perpendicular

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to the reference plane.

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So, that made a copy.

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That corresponds to the
depth of point A, point one.

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I'm going to do the
same thing for two.

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I'm going to off set.

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Here's the location
of point two.

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So, the depth should
be the distance

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to the frontal reference plane.

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Offset this frontal
reference plane on this side.

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Now I've located one and two.

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As I locate points, I'm going
to start creating object lines.

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OK. It's based on the
location of the points.

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One is over here.

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Whereas two is at the far offset
and in the same projection.

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So, this is point two.

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And then I notice
that point three is

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over at the same offset as two.

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So, I just continue the two.

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But the three, however,
four is different depth.

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So, I offset again.

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Location of four from this
interception perpendicular

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to this reference plane.

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Copy this reference
plane on this side.

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Then I'm ready to
connect three to four.

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So, part the line again
from three to four.

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Four is the latest offset
along this projection.

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This is four.

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And then I'm going
to go to five.

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I noticed that five, I don't
have the offset for five yet.

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So, I'll offset the dept for five.

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By the way, we could have done
all the offsets first before

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connecting the line.

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That's fine as well.

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I just wanted to do
it point by point.

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Then I connect four to five.

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It's along the same projection.

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But this one is the offset.

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So, this is five.

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Now going to six is the
same offset as five.

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I go from the projection of six.

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So, five is connected to six.

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Seven is in the same projection,

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but the offset is
the same as one.

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So, this must be seven here.

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The offset for seven
is the closest

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of those lines that are offset.

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And then seven is
connected to one.

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And I am done with that
weird shaped one, two, three,

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four, five, six, seven.

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The next thing I am
going to do is I'm going

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to locate other points
that I haven't projected.

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So, I am going to back to
the construction layer.

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OK. From the front view,
I'm going to project

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by making a copy of
this construction line

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from its current location
here to all the other points.

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It looks like this one
here is the same projection

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as the one for one and two.

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I'm going to make a copy
over here and one more here.

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And I see another
point down here.

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OK. So, I'm looking at
other points now in addition

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to the initial plane.

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Now I'm going to focus on
this skinny little plane here

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that's vertical.

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For instance, three should be
directly below three prime.

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And four is directly
below four prime.

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So, starting with four, four
and five rather, this is four.

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And directly below that is four
prime based on the projection.

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And then directly below five,
we have five prime over here.

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And then five prime
is connected to five.

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That's the [inaudible].

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Now, there's another rectangle

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on this side here
in this location.

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I'll do the same thing.

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It's coming from here, which is
six and below that is six prime.

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I'll click on six prime.

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Seven prime is directly
below seven.

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So, connected to seven.

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That's the other
skinny rectangle here.

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Now, there's also
one on top here.

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I'm going to locate
that before I forget.

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That is going to be
our example plane.

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OK. Coming from one to that

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and then one prime; the
skinny rectangle up there.

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You can call it whatever
names you want.

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And then this weird
trapezoid here on the right.

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I have to locate that.

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The point over here. this 
point it's directly below three

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and the offset of three.

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So, this is below three.

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And the opposite of three must
be that point right there.

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So, I am going to connect the
line from the existing three

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to the three prime,
which is, again,

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directly below the three
along this projection.

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Also, at the farthest offset line.

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This is three prime.

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And three prime is connected
to four prime over here.

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And then that is connected to
four and then back to three.

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So, I'm done with that.

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Now I am going to focus on
these other points down here.

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OK. That is probably
going to be hidden.

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So, the one down here
is directly below that

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hidden line.

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But this one, there
should be a hidden line

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and there should be
another one over here.

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So, I'm going to go

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to the hidden layer
here, hidden lines layer.

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There's a hidden line coming
from this corner here to here.

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And then another one coming
from here to here corresponding

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to the bottom point
of that plane.

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I think I'm about done.

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Let's just take a look at it.

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I'm going to turn off
the construction layer,

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so I can see clearly.