cone with rounded point 2

[Menolik]

When I make a 2d profile of a cone that I want to revolve, I make a specific radius for the point. After I revolve it, the radius of the point is slightly off. .007 to be exact. Why is this?

[shift1313]

how are you measuring this? is your revolve axis perpendicular to your bottom?

[Menolik]

Here are the steps I took.

1. Created a triangle

2. Used the fillet command to create a radius at the point.

3. cut that in half

4. closed the triangle

5. Revolved (the axis which I revolved around was perpendicular to the bottom of the halved triangle.)

6. Used Dimension ---> Radius ---> chose rounded point.

7. The radii were not the same.

 

I don't know, maybe I'm not choosing the correct area to measure.

[shift1313]

did you actually measure it before you cut it as well. how did you cut the triangle? did you explode it and use trim with a vertical line? Why dont you just draw a right triangle to start with?

[mugshot]

... did you cut it in the middle?maybe you cut in such a way that it is not on the middle, that is why you got a wrong dimension of your radius.

[Menolik]

Yeah I figured it out. Thanks

[shift1313]

what was it?

[mugshot]

what had you figured out though???? never mind, hope we helped you out on your problems....

[Menolik]

I took the dimension again and it was actually correct. lol

[GhostRider]

Crap I was waiting for a good explaination,..... I went back to my example I think and the diam. was different I think... I thought it might be related to the angle of the cone or it wasn't on exactly the center.. oh well..