Ok everything was going good until I hit a wall on these couple curves. I’m trying to learn what the limits are on this set, I think it should work but running out of ideas. [image] I’m using some technology from here: [image] How to fillet edges of solid union intersections Grasshopper As other said, Deconstruct Brep component will give you edges curves with the same order as the Fillet Edge component expect them. [2024-06-14 11_32_59-Grasshopper - fillet pipes] fillet pipes.gh (18.2 KB) problematic_curves.gh (28.3 KB) updated cleaned up file – slightly While I’m not necessarily trying to fillet this set, it fails to union. So, maybe I should remove some components and break it down till I figure out using more simple terms… idk…

Zoom in on your curve ends. They do not coincide. I moved one curve to the end of the other and the union worked fine in Grasshopper.

Just split the two pieces with a plane first…

Glad you posted cause I couldn’t find my post after it created I didn’t add the file yet :joy: So, that’s interesting, I didn’t necessarily even consider splitting these shapes at the midline, but it’s probably a very reasonably thing to do, and if it helps the maths then… I’ll try it. But what’s your reasoning with that operation? I’m curious how to word that technique :slightly_smiling_face: Maybe you don’t mean the midline per say…

Actually I meant mirror plane. I think the Boolean union does not work because of the coincident hemispheres…

I’m not seeing any simple threads showing easy way to do this… [image] :thinking: problematic_curves.gh (20.0 KB) taking a break lol [image] playing around with the order of operations here, finally getting some better geometry with the union: [image] I would like to try a different approach however, where I combine the curves, to make a more simplified automatic approach. :beers: bbl got it close, but still fighting with this piece: [image] simplified_approach.gh (16.1 KB) I’m considering revamping the curves to some other composition. Or turn this thing into something with different constraints / parametrics. [image]

[image] Martin Siegrist: I think the Boolean union does not work because of the coincident hemispheres… I think Rhino does it easy but GH makes it much harder…

Thank you for finding that. :beers: I swear I checked that already, and even recreated a couple curves. I’ll have to verify this in a few hrs when I get back to the office. Cheers. ahhaa bottom left corner [image] I look forward to fixing this :sweat_smile::beers: So, I put more energy into checking the coincidences or the ends of the curves, but nothing worked. I even decided to over lap them, and still didn’t work. [image]

[image] CAD CAM CNC: [image] [240616a_solid_union_pipes] [240616a2_solid_union_pipes] 240616a_solid_union_pipes.gh (13.1 KB) -Kevin

[image] Martin Siegrist: Zoom in on your curve ends. They do not coincide. I moved one curve to the end of the other and the union worked fine in Grasshopper. Ok, so I decide to battle with this, I made sure ‘apparent intersections’ was off, but it was still not easy. It wasn’t until I figured out a certain sequence that I was finally able to get the solid union to work: [image]

[image] Kevin: [240616a_solid_union_pipes] [240616a2_solid_union_pipes] 240616a_solid_union_pipes.gh (13.1 KB) This is really cool. I’m still struggling to understand some of it, but looks awesome! :sunglasses: [image]

And in the end, what do you do with these letters?

GH wont solid union simple pipes

Grasshopper

martinsiegrist (Martin Siegrist) June 17, 2024, 7:32am 14

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GH wont solid union simple pipes

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