[Solved] 3 b-spline surface

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concifederico
Posts: 29
Joined: Fri Apr 02, 2021 2:36 pm

[Solved] 3 b-spline surface

Post by concifederico »

Hi,
Thanks to the community and tons of trial and error I've succeeded in creating 2rail sweep for this open source and perhaps high performance parametric propeller. However now I'm not able to "close the tip" :roll: since it is not a 2 rail sweep.
Tried 2 methods:
To create a sweep between 3 edges and a central profile:
test.jpg
test.jpg (43.67 KiB) Viewed 1737 times
To create a sweep between 2 hulls and extend them:
Test2.jpg
Test2.jpg (43.29 KiB) Viewed 1737 times
Well the extend did not ever happended.
Worked with both surfaces and curves WB.
Also read so many many posts and seen most of Joko Engineering and JellyBean Solutions vids.
So this is why I'm here.
As usual, any help will be highly appreciated!
Regards,

Federico
Attachments
ParametricPropeller.FCStd
(140.88 KiB) Downloaded 31 times
Last edited by concifederico on Sat Dec 04, 2021 4:57 am, edited 1 time in total.
vm4dim
Posts: 129
Joined: Tue Nov 23, 2021 1:05 am

Re: 3 b-spline surface

Post by vm4dim »

Loft: [ 25pU, 75pU, 96pU ]
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thomas-neemann
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Re: 3 b-spline surface

Post by thomas-neemann »

concifederico wrote: Fri Dec 03, 2021 10:14 am
hi federico

is that a solution?

https://www.youtube.com/watch?v=DAOPdyuk2R8


phpBB [video]
Gruß Dipl.-Ing. (FH) Thomas Neemann

https://www.youtube.com/@thomasneemann5 ... ry=freecad
concifederico
Posts: 29
Joined: Fri Apr 02, 2021 2:36 pm

Re: 3 b-spline surface

Post by concifederico »

thomas-neemann wrote: Fri Dec 03, 2021 1:49 pm
concifederico wrote: Fri Dec 03, 2021 10:14 am
hi federico

is that a solution?

https://www.youtube.com/watch?v=DAOPdyuk2R8


phpBB [video]
Many thanks. A very interesting solution indeed!! I'll create a 99% hull and will go with 2 real sweep until there. Your trick will go in the last 1% .
Thanks again people,

Federico
concifederico
Posts: 29
Joined: Fri Apr 02, 2021 2:36 pm

Re: 3 b-spline surface

Post by concifederico »

Solved! Went to surface wb for the tip. The trick was to tweak surface parameters like tolerances from 0 to 0.05 and decreasing the degrees from 3 to 2.
Many thanks for all who collaborated.

Federico
Attachments
IMG-20211203-WA0018.jpg
IMG-20211203-WA0018.jpg (36.64 KiB) Viewed 1486 times
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