March 9, 2023, 7:46am
A solid body (Brep) was obtained by extracting one solid from the other. An error occurs when creating chamfers (R=750) on all vertical edges using the “Fillet Edge” command. The maximum number of edges for which this command works is 6. When adding the seventh edge the failed message occurs “1. Fillet edge operation failed”. What could be the problem?
Brep10-03.gh (53.1 KB)
March 9, 2023, 9:32am
bake your geometry - also _filletEdge outside Grasshopper / in Rhino Modelling fails.
there are small kinks in the neighbouring edges:
use _edgeContiuity to see the tangential deviation:
my guess - it is more a geometrical problem.
March 9, 2023, 9:56am
That would be
March 9, 2023, 12:58pm
Thanks for quick response, Tom
I’ve corrected the geometry of the edges by the _edgeContinuity command.
I tried in Rhino the _FilletEdge command – as a result the face chamfers are distorted (Fig. 3).
If I use the _BlendEdge command chamfers are created on 2 edges, and on the 3rd edge everything breaks completely (Fig. 4-5).
Brep_03-10.3dm (3.8 MB)
I would really like to use the capabilities of GH, since I use parametric modeling.
March 9, 2023, 2:31pm
maybe you should use another approach to create the breps ?
or do some rebuilding / clean - up before fillet ?
a fast and simple approach would be:
dupEdge (the main edges of the curved bar)
rebuild (with same parameters for all 4 curves)
loft (option straight section)
→ fillet will work
Brep_03-10_tp.3dm (4.2 MB)
rebuild violett curves…
version at top
Fillet Edge is fragile and often breaks, unfortunately. I added ‘40’ to the list of edges, then reduced radius until it appeared to work (200) but the result is “Invalid Brep”.
Unless your object must be exactly as it is, I would highly recommend rebuilding it.
I baked your object and extracted two sections with the YZ plane, rebuilt the curves in Grasshopper and created a new Sweep2. The resulting polysurface can be capped and has 12 edges.
Brep10-03.gh (19.4 KB)
March 13, 2023, 10:08am
Thanks for the answer! I repeated your method of modeling in the Grasshopper.
This shape is half of the pylon.
Precise geometry is very important for further design and reinforcement.
On the pictures you can see the difference in concrete volumes (300 m^3) as well as differences in geometry.
Can you suggest how to rebuild the solid body (as in the 1st post) and get the correct pylon chamfers?
Please post a file with the solid body that needs to be rebuilt.
For a superscript 3, type ALT+252
Here’s a slightly different approach which leads to a volume nearly identical to your original shape.
Brep10-03.gh (110.1 KB)
March 15, 2023, 9:40am
Thank you very much, Martin! Everything worked out!