Hey guys, we are going to do some modeling exercise today.
It's a 3D truss family like this.
You can change the offset setting to change the shape of it.
Let's start.
Create an adaptive family.
Add 2 points, and make them adaptive.
Create spline between them, and convert it to a reference line.
Create a point, with Draw on Face selected, place the point on the middle point of the reference plane.
Create another point, this time, Draw on Work Plane and pick the horizontal reference plane of the previous point.
Select the newly created point, in the properties, you will find the offset, create the first offset parameter.
Select the new point, and the 2 adaptive points, create the spline.
Tab and select it, and turn it into a reference line.
Create another point, Draw on the horizontal work plane of the new points.
Create the second offset parameter.
Create the next 2 points, this time, pick the vertical reference plane that parellel to the reference line.
Create 2 offset parameter for these 2 points.
I want them to be offset by the same amount, so I give it a formula Offset 3 N = - Offset 3
Okay, here I want to have an equilateral triangle.
Please ignore some of the steps here, I didn't have enough coffee.
The Offset 3 should be 1/sqrt(3) of Offset 2.
I finally got it right....
Now, create all the reference lines we need from these points. Make sure you tick the Is reference box.
Select the 3 reference lines, Divive Path.
In this example I just want to make the video short, so only 6 for the top ones.
11 points on the lower one.
Create points, Draw on Face, and place them on the dots.
Be careful here, there is already a point here, we will come back and deal with it.
Select the points and create splines.
Here are 2 points, one of which is the points to drive the curve, we don't want to use it.
If you see this warning, it means that we picked the driving point to create this spline.
I am not sure whether it will work just fine or not, but I will just undo and pick the correct point.
Looks like something's not right here, let me delete the point and do it again.
Select the point, which is the driving point, HH to temporary hide it.
Create a new point at the center point of the reference line.
Select points and create splines, all good this time.
Finish the rest.
Place 3 points anywhere on the reference lines.
Set work plane on the work plane of the point, which perpendicular to the reference line.
You can create diameter/radius parameter here if you like, I will just give a dimension for now.
Select the Divided Path and temporarily hide them.
Select the profile circle together with the reference line, create form
Repeat for the other 2.
Repeat for the webs.
Ctrl+select all the lines as well as the profile and create the sweep.
Repeat on the other side.
Finish the rest of the framings.
Okay, that's pretty much it.
Let's test it in a project.
It works just fine, except that the angle looks weird...
All good, that's it, I will share the other family I did before, in which I built some diameters for the frames.
Can we make it automatically adjust the web number for a different length?
Maybe we can...
Thanks for watching and see you next time.