I am trying to ‘bend’ an object that is composed of a poly-surface extrusion, surfaces, curves and a mesh to produce a domed surface/object. The bend needs to be in two planes, X & Y, 30" and 20" radius respectively. The first bending results in a straight and square periphery. However the second bending of the previously curved surface results in a distorted/curved edge.
Is there a wat to control the ‘bend’ command to produce all straight edges? and to size?
Are there secondary operation that would straighten the curved edge?
Is there a better approach the this situation? I’ve tried ‘Flow’ and ‘Project’ neither with better outcomes at my level of competency.
Here’s another option…
I used Flow.
In the Right viewport, I trimmed your circle to make an arc from the circle center to the edge of your flat assembly. Then a straight line (for the Base line), on the flat bottom.
Hi Thomas - see if this does the job - I made a target surface at radius 20 and 30 and used the attached ‘ProjectObjects’ plug-in at density 8 by 8, to smoosh it down onto the target. Note I had to move the objects up a little for the projection to work correctly.
@thomas_j_fabian Bend should work fine too, btw - set up the circle at 30 radius in the front view and Bend twice, with symmetrical=Yes. Set the ‘spine’ from the origin to the top of the short vertical (or radial, really) line
Thanks for the input, however that technique gives the same results as ‘Bend’ on the second operation. So unless I’ve overlooked a parameter setting or drawing technique, I’ll still be looking for a solution.
BTW: I’ve stripped a lot of stuff from the attached file to make it ‘uploadable’.
Thank you for getting back to me. I did install ProjectObjects with the plug-in manager. Next I’ll learn to use it. I had tried a similar technique but had gotten stuck on creating the 40/60 radii surface. Any hints for that?
Also I have been using ‘Bend’ in the same fashion as you suggested. The trouble has occurred only after the second ‘bending’. The results have been giving distorted edges in the second bend plane.
Thanks for your response. I’ve been looking into the Rhino command ‘wiki’ and will practice using Cage Edit. If nothing else I’ll have learned a new technique.
