Hello everybody, 

I have been asked how I do those hatchings in my svg-files. So I tried to create a little tutorial on it. (Take a look at the attached image, it makes things easier.)

1. Create a spiral, using the spiral tool. Give it a reasonable amounds of turns (24 +, depending on the area you want to hatch). 
   If you want to have a hatching, that can be edited later on, there is one extra step to go:
   Create a random object outside the target area, give it a distinct color. Select the spiral and the new object (using shift+click) and use object > group.
    
2. Create a path to define the area, you want the hatching to be visible. (Give it a another distinct color and set the opacity to 50%).
   The path must be above the spiral group. 
   Now select the group and your path (shift+click) and use object > clipping > set. 
   Your hatching is visible only in the clipping area. 
    
3. Now you can edit the hatching by using strg+click. Once the spiral is selected, change the stroke width, stroke color, number of turns in your spiral or move the spiral to change the appearance of the hatching. 

Please tell me, if this tutorial is helpfluss. 

Interesting, thank you!

Thanks for sharing this, Gerald! As I've said before, I really like the effect this gives, and it works very well.