How to create an irregular pentagon?

[Anonymous]

Hello everyone!

I'm in urgent need of creating a 3D design of a vocal booth, which is a pretty difficult task for me (since I'm a newbie), so I hope someone will be able to explain to me how to do as easily as possible.

The difficulty is that my vocal booth has a pentagon-shaped base. In addition, it's an irregular pentagon, so I have to be able to manipulate its edges and angles.

I'm attaching a blueprint so you have a better idea of what I'm talking about.

Thanks!

[leeminardi · Accepted solution]

Although the construction of this shape would be easy in AutoCAD, Inventor and other CAD programs I find it a bit more complex with 3ds Max.  Here's the method I used to create the shape.

1. Create points at 0,0,0; 28,56,0; and -28,56,0
2. Create a circle of radius 48 centered at 0,0,0
3. Create circles of radius 24 centered at the points  28,56,0; and -28,56,0
4. Find the intersection of the 24R circles with the 48R circle via the following:
   1. Convert the three circles to NURBS by right clicking them and choosing convert to NURBS
   2. Select one of the three "circles" (which are now NURBS) and referencing the Modify panel attach the other two circles to it.
   3. In the Create Points section of the Modify panel click Curve-Curve
   4. Select and drag from one circle to the other circle near the intersection point you want.
   5. Repeat the last step for the other intersection.
5. You can now use SNAPS to create a line from point to point as seen in the attached.

I will agree that this seems like a complicated process.  Perhaps someone can offer an easier method.

~Lee

[PROH · Accepted solution]

Hi. From the information given in the drawing, I think it's quite easy. So here's my approach:

1) Make rectangle (quad) sized 48" x 48"

2) Rotate it 45* and place it with the bottom corner at 0,0,0.

3) Make it an editable spline and delete the two top segments (so you only got the bottom V)

4) Make a horizontal line that is 48" long, and place it with the center at 0,0,0

5) Move the line 56" up along the y axis

6) Now you got all points needed, and can simply draw your new shape by snapping to the vertices of the other.

Hope it helps

Edit: Step 4 & 5 could also be done by making a rectangle at 0,0,0 that is 48" wide and 112" high, and then deleting the 3 lower segments.

[Anonymous]

lminardigmail, PROH, thanks a lot for your help!