Sketching on curved surface

Dqwrq07 · Post by **Dqwrq07** » Sat Nov 23, 2019 12:12 pm

I'm trying to make a sliotar(a ball for an Irish game) but it requires a bump in a pattern similar to baseballs and tennis balls. I already have guide points but I don't know how to make a curved spline or how to sketch it on a curved surface.

UR_ · Post by **UR_** » Sat Nov 23, 2019 3:31 pm

AFAIK is the Bishop-curve a slice between a sphere and an elliptical cylinder.

: Screenshot 001.png (89.36 KiB) Viewed 499 times

bishop.FCStd: (29.25 KiB) Downloaded 15 times

Dqwrq07 · Post by **Dqwrq07** » Sat Nov 23, 2019 4:17 pm

UR_ wrote: ↑Sat Nov 23, 2019 3:31 pm AFAIK is the Bishop-curve a slice between a sphere and an elliptical cylinder.

Screenshot 001.png

bishop.FCStd

How did you do that?(I'm on phone right now)

Vincent B · Post by **Vincent B** » Sat Nov 23, 2019 4:55 pm

according this website: https://www.mathcurve.com/courbes3d.gb/ ... ture.shtml
and the macro: https://www.freecadweb.org/wiki/Macro_3 ... tric_Curve
you can make a 3D curve, by adjusting a or b.

Sketching on curved surface

Sketching on curved surface

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