In this video, we're going to look at the polyExtrude tool with Curve Input inside Houdini. Let's put down a spiraly curve which we will use as our spline to extrude along. We then see how we can extrude a singular face on a box with that curve, then extrude the curve using all 6 sides/faces of the box and then swapping the box with a torus and using Divide Into “Connected Components” and choosing select edges in the Split Group option, we can get some cool octopussy extrudes using the curve we made at the beginning of the video. There are many options within the Spine Control tab, in Shape Adjustment, External Spine, that you can use to further tweak the shape of your extrude with! 



For over thirty five years, SideFX has been providing artists with procedural 3D animation and visual effects tools designed to create the highest-quality cinematic results. We are passionate about what our customers do because our roots are in production, both as artists and as pioneering technical innovators.

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  • MealeaYing 5 years, 4 months ago  | 

    This is so awesome!
    Thank you!!!!

  • Jcreator 5 years, 3 months ago  | 

    cool feature!

  • JohnDraisey 4 years, 12 months ago  | 

    Very cool, been modeling in Houdini for just a week and I'm already getting crazy results. Keep posting videos! =]

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