Hi! I made the gyroid below from a tutorial. The model is a 4x4 box array, so 4 gyroids aligned to each other: [image] However, the edges don’t quite match, so there are small slivers here and there: [image] My question: Can I somehow get the edges better aligned/welded? The aim is to get a 3…

For a quite different way of approaching this… Some time ago I discovered a way to discretize the gyroid using only 1 type of triangle. [image] You can use this as the starting point for a subdivision mesh, and get a much cleaner and more regular result than you do from an isosurfacing approach …

I noticed most of these TPMS are generated only in cubes or rectangular forms. Is there a way to change the boundary to a sphere maybe?

Hi Bobeng, The P in TPMS stands for periodic - so the unit cell has to be a shape that can tile space, which a sphere doesn’t. Common ones aside from the cube are the rhombic dodecahedron, and the truncated octahedron. There are lots of examples on Ken Brakke’s page . You can also certainly generat…

Thanks for your reply Daniel. However, I’m talking of models like the attached. Is there a way to generate such models? [f] [w]

The first one looks like someone has taken a regular periodic minimal surface and trimmed it with the bunny shaped boundary mesh. This should be possible with the Mesh Split component. The second one looks like it has been stretched and mapped to the torus (and is no longer minimal).

Here’s an example of the first approach: [image] minsurf_trim.gh (84.4 KB)

Thanks a lot for your response Daniel. This is amazing!!. By the way, which part of your .gh file the contains the equation of Schwarz D so i can change to other minimal surface if possible?

In these examples the minimal surface comes from the initial mesh, which is internalised as the first component in the definition. In this thread I’ve posted these discretizations for the gyroid and Schwarz D surface. The Schwarz P surface also has a very simple discrete version.

how do I change: i) The type of minimal surface used ie. into a gyroid or schwarz p using their equations. ii)The boundary mesh into another shape

I created this gyroid but I am not able to define the length, width and height. I will be glad if i can get help controlling the dimensions. Thanks. Gyroid.gh (16.9 KB)

Weld seams between gyroid meshes

Grasshopper

DanielPiker (Daniel Piker) November 12, 2019, 11:05am 14

Here’s an example of the first approach:

minsurf_trim.gh (84.4 KB)

How can i create this geometry?

Gyroid \ minimal surface not in bounding box

I want to make cylindrical gyroid shape

How guys have a idea of this minimal surface form

Lattice to avoid warping in 3D print part

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Weld seams between gyroid meshes

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