Sketching on curved surface

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Dqwrq07
Posts: 2
Joined: Sat Nov 23, 2019 12:07 pm

Sketching on curved surface

Postby 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_
Posts: 1175
Joined: Tue Jan 03, 2017 8:42 pm

Re: Sketching on curved surface

Postby UR_ » Sat Nov 23, 2019 3:31 pm

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

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Dqwrq07
Posts: 2
Joined: Sat Nov 23, 2019 12:07 pm

Re: Sketching on curved surface

Postby 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)
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GlouGlou
Posts: 2010
Joined: Sun Apr 05, 2015 9:02 am
Location: La Rochelle, France

Re: Sketching on curved surface

Postby GlouGlou » 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. ;)
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