Shrink Wrap Modifier and Distortion I have created two cables that wrap around each other. 

I want to apply a foil shield, so I created a cylinder, deleted the top and bottom faces then applied a shrink wrap modifier.

It worked, however, the top and bottom of the wrapped cylinder (marked in red) is distorted instead of a nice straight top and bottom edge, I really wanted a straight line. Please see the reference images.

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I went through the options, with the same successs :( so ... what about Booleans?


to help a bit topology, use Simple Deform Modifier > Twist
ShrinkWrap > 
Smooth Modifier > Repeat 5
add a Cube and for Cylinder add Boolean Modifier > Intersect


(if you plan to move Cylinder, would be better to parent (Ctrl+P) Cube to Cylinder)




to smooth surface - search for Smooth Shading
fix for edges shading - go to Properties Editor > Object Data > Normals > Auto Smooth


(like that Subsurface Modifier probably is not needed in this case)