Hi. First of all; I’m new to grasshopper, but really eager to learn more! I figured that instead of sitting and watching tutorial after tutorial, I’d much rather just start off by attempting to create something that I want and then face the challenges as they appear. So far it has worked out perfectly, but I just hit the wall! And after lots of frustration and Googling, I’ve given up. Oh, I also tried asking ChatGPT for help, but it obviously has no idea about GH!
So what I want to do is create an outer wall and an inner wall of a vase by lofting curves. I then want to cap both breps and do a solid difference to make the final design. I initially thought I had an issue with the “Cap Holes” component as I somehow got the curves to loft perfectly after fiddling with graft/flatten/simplify/reverse but Cap Holes would say that it failed to return a result. Upon further investigation, it seems that my Region Union is not able to connect the curves to become 1 closed curve. Could this be the reason for my struggles? What should I do to fix it?
Any help is deeply appreciated! Have a wonderful weekend!
The overlap of the small rectangles with the circles was sketchy so I added a ‘nudge’ slider (yellow group) to compensate. Made other changes to how the inside and outside of the container are joined to form a ‘Closed Brep’ (I thought it was but now it’s not?). Created the bottom separately.
P.S. Sorry, I thought I had it but obviously not. I’ve tried all the tricks I can think of.
OK, I finally got it. There is always another way…
I gave up on lofting the region unions approach and created a “solid” (‘Closed Brep’) from the outer and inner circles, then used SUnion to add the ribs. Finally used SDiff to create the bottom and SUnion to join it to the ribbed walls. The very last thing was one missing rib due to being on the loft seam so rotated all the ribs 45 degrees to fix that. Whew!
Thank you, Joseph! I see you’ve done quite a few things differently than I did. Now I get to learn what each component does so that I can become better! Thank you very much!
When I open up your file, I have an error in the “nudge”-group where it seems like no data is coming out from the Offset Component:
That’s very odd, it works for me. Did you change anything? What is your Rhino tolerance value? You can see it using ‘View | Display Options… | Units’ in Rhino. Mine is 0.001.
By increasing the offset slider value, nothing else happens. I see that the wires connecting from the output of the offset to the other components are red. What does that mean? They are usually black or dotted. I really appreciate you trying to help me! Thank you so much!
Thank you both for your amazing help! Now I have the pleasure of learning exactly what each component does for the model and learn it for the next time.
It produces the same error I had before blindly trying the Deconstruct/Join trick : there is a nasty naked edge along the vase. This makes the Cap Holes fail, and even if the caps are produced manually as you did, the final join is still open.
Thanks. I saw that nasty edge issue but didn’t realize it was a naked edge. Bizarre! I would never have thought of “the Deconstruct/Join trick”. Another GH bug?
I was also puzzled by the sketchy overlap of rectangles and circles that motivated my use of the nudge code I added, which isn’t an issue in your code. But I just figured that out - you constructed a domain that made the rectangles twice as long, which solves the sketchy overlap issue. DETAILS!
