Combine 2 surfaces, only keep exterior facing surface

Hello,

I would like to combine these 2 twisted surfaces. I would like to only keep the exterior facing surface so that I can see the twists converge in my final 3d print. I feel like this could be easily solved by Rhino 8 shrink wrap but I am on 7. Here is an example on what I am trying to achieve, I am open to other suggestions on how to create this shape to be 3d printed.


pot-TWIST.gh (16.6 KB)

Your geometry is not internalized.

Apologies, I don’t think I saved it after internalizing. This should be correct.
pot-TWIST.gh (16.8 KB)

You can get a closed mesh via ShrinkWrap,


pot-TWIST.gh (14.2 KB)

Yeah, but it doesn’t match the shape you posted?

This doesn’t address your issue but you could use only one Twist (and Loft).

But he said this:

Yea I figured Shrinkwrap in rhino 8 would work but I am still on 7.

The shape is inspiration. I will be able to tweak it once I figure out how to get this exterior surface isolated. That’s helpful to know I can use one loft.

Give it a try with Dendro in Rhino 7
Dendro | Food4Rhino

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That seemed to do the trick! Thank you
I am still working on the surface quality of the mesh but it shouldn’t matter too much because I am printing with clay at a 3mm nozzle!

You also can give it a try with PanelingTools,
https://www.food4rhino.com/en/app/panelingtools-rhino-and-grasshopper

pot-PT.gh (18.5 KB)

pot-TWIST Edited v0.gh (58.8 KB)

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And Srf param is not internalized.

pot-TWIST Edited v1.gh (61.8 KB)
v1

Thanks again for all the help!

2 Likes

Do you need to put this into furnace to harden it? What it looks like after that?

Yes! It is terracotta clay and I fire it to 1900 degrees F in a kiln. It should turn a little lighter and shrink a bit too.

Would you be willing to share a picture of it once it is completed? I am curious about how the horizontal 3D print lines turn out.

pot-TWIST Edited v2 [thickness].gh (130.4 KB)

To make it solid. And it can also smooth out the inner side.

But that might make the feature parts vulnerable due to the thickness variation.