faint lines...

 From:  Michael Gibson
4896.4 In reply to 4896.3 
Hi niko - the easiest thing is to not worry about it - if you are manufacturing this part there is no way that tiny level of detail is going to make it into the end result.

Otherwise if you want to get a smooth result between pieces you need to use Fillet or Blend to generate continuous surfaces, other techniques won't work.

- Michael