How to thicken/offset surfaces with high curvature?

[kjjboc]

I am trying to thicken this with 1mm thickness. 

Any workaround or changes that I should do? 

[blandb]

What is your ultimate goal here?

[kjjboc]

basically I want to create blades of a turbine made from those curves. 

i array the initial surface and create this.

However trying to thicken would result in this 

The surface requires a thickness of at least 1 mm. 

[blandb · Accepted solution]

if you cut a hole into your loft the size of the shaft to weld the blades to, it should work..

[johnsonshiue]

Hi! More than likely the failure is at the tip. No only the tip has high curvature, it is like a singularity. The faces may overlap or self-intersect in that area. I would create a parallel work plane to XY plane. Then trim off the tip. After that, the Thicken/Offset will work.

Many thanks!