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

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)



And Srf param is not internalized.

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

Thanks again for all the help!

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.