Hi Jochen,
I find the sinter pool double line doesn't give a very good result.
In my opinion:
- the separation between the plaine line and the dashed line is far to wide
- the dash length and inter-dash space are too large.
- the dashes are not a dashed line but tangent dash to the plain line, which produces ugly results with bending lines

Attached some examples
in red = sinter pool double line.
in black = plain line + 1/2 dashed line which is better but still improvable using 1/4 dashed line I guess.



would it be possible to get an improved feature?