How to make a solid object like a Rhino's horn

[Tayyab]

I want to make a solid like a half donut but with both the ends with different diameters. The size veries uniformely from the small end to the large end. suppose the larger end is 100mm than the smaller end should be 50mm, in the middle the diameter will be 75mm (This is the general case with our drawings)

[csiarch]

Look in the Open Discussion Forum, create tubes topic. If I understand your post correctly, drawing a polyline profile, revolving and joining the resulting revoloved shapes may be of help. If your shape curves as well as changes diameters, that may take some additional work.

Hope this helps

[architech]

CsiArch ... you're suggestion (revolve & Join) should work better than extruding the path along a 3DPOLY. :P

Although ... hmmmmmmmmmm :?: .....
(Thinking out loud .... :idea: )

A rhino's horn .... I think a combination of the "revolving profile" & "surfaces" would be the better solution.

Tayyab let us know how it works out for you.
Good luck. :mrgreen:

[csiarch]

Architech: Sometimes NOT knowing a lot about 3D has its advantages....I responded to the basic description which I interpreted as a series of truncated cones....The hard part as I see it is curving the center axis as your 3dpoly suggestion was going towards (I think!).

To get a curved horn shape, I think the poster will have to do a little of both plus fill in the mismatches at each instance where the axis angle changes.

Whew! I'd like to see the finished product of this one my self!

Didn't say what this was for...perhaps an advertising sign for a health food store in China?

[architech]

CsiArch, actually 3D modeling is just that. ... "using basic solid shapes" ...

... I responded to the basic description which I interpreted as a series of truncated cones....The hard part as I see it is curving the center axis as your 3dpoly suggestion was going towards (I think!).

To get a curved horn shape, I think the poster will have to do a little of both plus fill in the mismatches at each instance where the axis angle changes ...

Regarding the quote of your's above .... flat surfaces should take care of that .... that's why I said ... a combo of your's and mine should yield the rhino horn.

Pretty much 3D modeling approach can be compared to using "legos" or "lincoln blocks". The rendering & lighting to "Photo-realism" is the real trick ....

3D modeling is just knowing the 10 to 20 basic commands. A whole lot less than 2D commands. :mrgreen:

Later guys. :)

[csiarch]

You know that and I know that (sorta) but the big problem in the business is trying to convince other architects to use 3D modeling as a tool to produce more accurate drawings.

Because I'm a little older than some of them, I have the advantage of being able to shame them in to trying it but the mere mention of 3D to most gets me that glazed over look and twitching in the chair, trying to find an escape route.

I simply cannot understand how a group of professionals who pride themselves in visualizing in 3D will, as a group, run screaming into the noght at the suggestion that they draw in 3d.

See 'ya around the old forum!