WEBVTT

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>> This is a tutorial
on lab number thirteen,

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wide frame modeling, starting
with an imperial drawing.

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We start with a bottom, a
rectangle starting at origin 0,

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0 and then 4.5 comma zero
and then 4.5 comma 3.5.

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and then 0 comma 3.5.

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and then to close the
triangle let's just go

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to the end of the starting line.

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Then the next thing we do is
we try to go to zoom 3D view,

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I'm just going to check
where we can simply go here

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under view controls and
select southeast imetric.

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This will allow us to
look at the object in 3D.

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The next thing we do is we copy
this rectangle on the bottom.

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OK, initial base point is any of
the corners and the displacement

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at zero comma zero comma 2.7.

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And we move up along
the z by 2.7.

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That's the copy.

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And then using the line
command, connect the corners

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of the two rectangles
here to here.

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And then here to here.

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Then, OK, the next command
that we'll be using,

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the autocat toolbar code, so you
go to tools, toolbars, autoCAD,

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objects snaps because we're
going to be using the snap

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from line, snap from,
this snap from allows us

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to identify this temporary
point and then relative

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to that we start at
1 comma 0 comma 0.

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So the starting point
is relative to that

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and then the end point of the
line is zero 3.5 comma zero.

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There's an at in the beginning.

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It just gives you the
end of the other line.

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One more snap from command
is to illustrate it.

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Line snap from allows
you to temporary,

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use the temporary origin.

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And then relative to that point
we're going to start at zero,

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at zero comma 1.25 comma zero
and it will move to the right

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so it's one comma zero
comma zero is the second

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starting point.

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Let's do that again.

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Snap from.

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This is out of origin now.

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So relative to that we start at
zero comma negative one point 25

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in the y direction and z along
z starting point on the line

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and we just move
relative to at one zero,

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zero again to move
to the right by one.

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Then let's turn using
this as boundaries, enter.

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And click on the objects,
all of the objects

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that you want to trim away.

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Moving in a little bit, focusing
now on the bottom instead

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of using the snap form I'm going
to use a series of offsets.

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Offset by one point five.

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This line here in
this direction.

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That would locate the center
of the circle in the bottom

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and then another offset, this
time at a distance of .6.

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This bottom front line here in
this direction and also going

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in the back this direction.

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And now for another copy of .6
here and another relative

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to this line here at .6.

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All of the lines
are .6 inches apart.

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And then I'll create the circle
starting from the mid-point

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of this line and a radius .55.

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And it looks like it
extended to those two lines.

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That's correct.

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So I'm going to create
this lines here and here

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and then do a series of
trims using this, this,

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line this line, and one more
line as my cutting edges.

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Press enter.

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Trim this line, this line,
this part here, this part here,

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this part of the circle and
also this part of this line,

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turn this over and
trim this away.

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Enter. So it looks like I
forgot another trim relative

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to these two as my
cutting edges.

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Enter and trim this away.

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And then erase those
extra lines.

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Now I'm going to copy the
bottom profile of shape here.

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All these lines here.

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This line, OK, that one,
enter, using any corner

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of the base point and I'm going
to move this up so at zero,

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comma, zero comma .785.

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Don't foget to add.

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And then I'm going to
create this connecting line,

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this line here, from
here to here,

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repeat the line command
from here to here.

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Repeat again from here to here,
here to here, also for the back

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as well as the semi-circle
from here to here

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and from the end point
to end point and then

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from the mid-point here which
is the quadrant to the mid-point

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of the circle, the bottom, make
sure it goes to that mid-point

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and then I'm going to copy
and trim this using those

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and then erase the
lines that I don't need.

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This line here, this line here
and this one I don't need.

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I'm going to copy
this line here.

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There may be ways of doing
this but I'm going to start

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with copying this line here
from the current position

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as my base point back
here on the left here.

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Now if I attempt to trim these
extra lines here even though

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that is not going to work.

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The reason the trim command
only works when the lines,

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the x and y are parallel
to the x, y plane.

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The x, y plane is horizontal

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and those two lines
will actually end

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up front vertical plane.

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So I'm going to need
to change my UCS,

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new UCS using three points.

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Here's my origin.

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Here's a point in the x axis and
here's a point in the y axis.

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Notice now that the
xy plane is parallel

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to the lines that I'm trimming.

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So I'm trimming using
this line and this line.

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Both are stuck on
the edges as well

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as this two lines
are cutting edges.

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Press enter.

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Now trim all the parts
that I want to trim away.

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It worked this time.

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Because trim only works when the
x y User Connect System, UCS,

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is parallel to the
plane of the line.

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Now I'm going to re-position
it to the next plane.

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Here's the origin now.

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Here's the x axis and
here's the y axis.

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Using the tools new
UCS three points.

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Cause I'm going to be
working on this left plane.

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So I'm going to use
offset again.

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Offset this line to this.

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And then I'm going to use
the orbit to make sure,

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sometimes for SE isometric
it's hard to see the object,

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so we re-position
it using the orbit.

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And I'm going to make a line
starting from this to this.

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And I'm going to move that line.

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There are many ways of doing
this, from its current location,

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say here and then move
it relative to that,

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so at zero along x I'm going
to move it down along y by one

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so it's minus one along y and
zero along z, so that line move

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down and I'm going to
connect that corner

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to that line that I just moved.

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Repeat the line command
again from here to here.

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And then I can actually
copy those three lines

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that I just made here.

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Position here at the base line.

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Second position will
be over here.

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And then connect
those points this,

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the order I'm doing it may not
be exactly the same order that's

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shown in the handout.

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Next thing I'm going
to do a line command

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from here, this line here.

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That incline line and then at.

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It's going to move
downward by minus point,

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along x by minus point five
and downward by minus one.

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Do the same thing here,
starting from this point.

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I could have used
the snap from also.

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So starting from this point,
OK, to point five minus 10.

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now these two lines
here I'm going to use

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to trim both of my
cutting edges.

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Press enter.

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And I'm going to trim.

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Let me copy those.

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Copy from the current location

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to this location
here I'm copying.

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And then trim using this
line as my boundary.

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Trim all this.

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This one, this one, this
one, that one, that one

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and also this and this.

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I'm done with trimming and erase
this line that I don't need.

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Then disconnecting lines here.

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Repeat the line command for
this and this and this one.

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I'm just missing the cylindrical
hole so I'm going to make,

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I'm going to offset by a
distance of .6 because it's 1.6

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from the top, so minus one will
be .6 that line to that line.

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And then I'm going to make a
circle here at the mid-point

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of this line that I
just offset by .6.

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Then I'm going to
copy that circle

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from its current location here

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to this new location
and erase that line.

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I'm going to connect
the quadrants,

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so I turn on the
quadrant objects' map

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so I can make the line
connecting the quadrant here

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from this circle
to this quadrant.

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So this would be four
lines connecting.

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Remember this is a wire frame
model so these circles need

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to be anchored by
two, by four sets

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of lines connecting
the quadrants.

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And then I still have
those two extra lines.

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I'm going to, oh,
missing this line here

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and then erase the two extra
lines, one here and one here.

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I think that's good now.

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Let me, do SE isometric again.

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It looks correct now.

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Just to be sure because I'm
going to orbit it again.

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Rotate it a little bit, inspect,

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make sure that all
the parts are correct.

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I think that we're done.

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Now for part B, we're given
the top and the front view.

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This part here corresponds to
the bottom of the figure here.

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Whereas this part here
corresponds to the back

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over there so I will not
show the actual solution

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but this is how the 3D object
would look like in a wire frame.

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Just to show how it
looks let's orbit again

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and there's your 13B solution.