# Circular kirigami cut pattern

Good day all,

I am trying to create this kirigami cut pattern on GH following this youtube tutorial. https://www.youtube.com/watch?v=-D_IxsXUuIM [for diagram of cut pattern, see 2:20]

when expanded, the paper makes a expanded net structure as such: https://www.youtube.com/watch?v=-D_IxsXUuIM

Cuts are circular arcs, with positions alternating between odd and even circles.

I have some .gh definitions using these two strategies:
circle kirigami net.gh (19.1 KB)
v2 kirigami net.gh (12.3 KB)

i hope someone will teach me how to make the circular arc cuts, while having them alternate between odd and even circles. Iâ€™m having trouble understanding how to select only one branch from the tree of points.

Could someone enlighten me? Many thanks!

Samson

is this what youâ€™re trying to achieve?
im not so much â€śselectingâ€ť single branches, but performing an alternating rotation of half/full â€śsliceâ€ť.
first branch of 8 curves gets rotated 0 degrees, 2nd 22.5, 3rd 45 - and so on.

(was missing a plugin to look at your definition, tried to figure it out from the videoâ€¦)

circular_kirigami.gh (15.6 KB)

Hi Amir,

Indeed that is what iâ€™m hoping for. Thank you sir, much appreciated!
I will continue to work on varying the radial gap between cuts via an uneven division.

Best Regards,
Samson lai

Hi Sam. Iâ€™m not using any plugin for multiplication. Are you using the latest Rhino/Grasshopper? Anyway, the only multiplication occurring is seen in the screenshot, so you should be able to complete the definition. Let me know if you have any more questions.

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