Spring with variable thickness

[BillyBeach]

Dear,

I'm trying to model a spring that has a variable thickness. In the middel of the spring the spring is thinner then at the start and ending of the spring. I tried lofting whit a helix as guideline and tried to create a boundary surface, using three intersection sketches. But it will not build the spring... I could use some advice here. Thanks in advanceView attachment 5965




Best Regards,

Billy Beach

 

[ARC1]

you need to have tyhe circles at the start and the end of the helix.
as for the middle one just split the helix at the circle interference

 

[BillyBeach]

Hey Thanks.

It worked with a Loft and the helix as a centerline.

Greetings,

Billy