How to tilt/shear a circular pattern so that it describes a cone

spurtle
spurtle Member Posts: 4 ✭

Hi, I'm fairly new to onshape and parametric CAD, but blown away by its power and versatility. I'm modelling for 3D printing and I've hit a knowledge gap that I haven't been able to resolve via the forums. I'd be grateful for any advice.

I have a pattern of cylinders that I created by sketching a circle, repeating with 'circular pattern' and then extruding. Think like the chambers of a revolver. So far, so good.

Now, I want to tilt or shear each cylinder around the centre of the circular pattern so that the extrude is along the surface of a cone. Think like tipi poles.

I can achieve this for a single circle/cylinder by building a construction line and using the sweep tool, but that won't work for my circular pattern, as I want the extrude to converge on a point around the centre of the circle.

Any clues? Apologies if I'm not using the right language to describe the problem: I'm always willing to learn. Thank you!

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Best Answer

  • jnewth
    jnewth Member, OS Professional Posts: 155 PRO
    Answer ✓

    https://cad.onshape.com/documents/a31dcad4c65e5d6f9e2492af/w/db140e6cd3ebc878bf91c0b1/e/1a5102b210952561fd2df01b

    That doc has two part studios showing different ways.

Answers

  • jnewth
    jnewth Member, OS Professional Posts: 155 PRO
    Answer ✓

    https://cad.onshape.com/documents/a31dcad4c65e5d6f9e2492af/w/db140e6cd3ebc878bf91c0b1/e/1a5102b210952561fd2df01b

    That doc has two part studios showing different ways.

  • spurtle
    spurtle Member Posts: 4 ✭

    Exactly what I was looking for: thank you!

    I didn't realise that there was a circular pattern for parts as well as for sketches.

    Also learned something about the draft tool from your demo. Thanks for sharing.