poor curve rendering

[jeffroyer]

Having difficulty getting these curves to render well.

The curves in question are part of a solid subtraction. The item being subtracted is a polyline that includes part of an ellipse.

The 3d res is set to "very high" in my preferences.

The "good" curve in this view - next to the bad curve - is also an extruded polyline like the other - but it is not part of the subtraction and it has a filleted edge.

Any suggestions?

thanks

[CipesDesign]

I have a couple of ideas. First, you could have modeled those arched pieces in a frontal view and the just used simple extrudes. Second, if you are in Open GL try adjusting: Render/open gl/open gl prefs to " high" or "very high"...

[jeffroyer]

Thanks Peter.

After I posted this, I went back and did just that to see if the results would be better - and viola! they are.

Guess I am still learning that some objects render well and others don't. The solid subtraction was great for the design process of being able to adjust and manipulate the forms to our liking. Now I have removed them and replaced with the simple extrudes.

Funny that one would render well and the other would not.

thanks again

jeff

[JeffPPI]

I agree with Peter, you could use front view extrudes and the champfer the edges to get the look you want, it should render cleanly.

like this.

[CipesDesign]

Nice! I far prefer to work on 2d forms then extrude for 3d. At least as much as possible. Solid subs tend to create large files as they retain history of the original objects. In any case , glad you found a solution.

[Pat Stanford]

Did you change your 2D conversion resolution between doing the two curves? The 3D will take on the facets that the 2D had when you convert to the 3D.

Does that make any sense? I am having a hard time describing it this morning.

[jeffroyer]

Thanks for the input. Had not considered that those solid subtractions would add to the file size. The last thing I need is even bigger files.

Pat - I don't know if I understand your question. But then again, I have been up late working on this project. My 2d polylines looked great before extruding them - if that is what you are asking.

here is the improved version