Solid difference

Grasshopper
1

Hello everyone, I have a problem. I used a

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to cut the width of the staircase with some kind of surface. And now I’d like to apply some colour to the staircase. And I can’t manage to hide the surface with which I made the difference. How can I hide only the surface and apply the colour only to the staircase?

1 Like
2

To get better help:
include a gh file and internalize geometry (preferred)
or
include both the 3dm and gh file.

In general, if your boolean difference results in an open (poly)srf it means that your inputs were open to begin with.
If the staircases are all solids, I’d substract a simple cylinder from them rather than a spiraled surface.

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spiral stair okv1.gh (1.7 MB)
thank

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I also have the problem of having to give the lower balustrade a closed oval shape.
thanks in advance

4

can you just send the data that is relevant to the issue?

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in orange Here there Is a point , please you have to set one point in Rhino an all will be come

(attachments)

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Yes thank you
And for the staircase banister, please close it in an oval shape as shown in the image.?

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Hi Leopol, thanks for your help, but I’d like the glass part with which I cut the staircase to be masked too, like all this element. As on the photo, I just need the part of the staircase as the rest, can you help me further?

9

The blue group is used to eliminate unwanted surface.
The red group can be eliminated.
The construction of the staircase is very complicated and presents some problems.
To eliminate the central part, instead of the Loft, it is better to use a solid cylinder to use as solids subtraction.

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10

Yes, very well, and thank you for your help. Got it.