The text remains there forever

Well, came naturally, as here actually common, fast.
I found great, so my selling panels to describe.
Disadvantage, the text remains there, even after scrubbing with a sponge, Alkoholabreibubgen, Power cleaner .... he does not go completely away.
A shadow remains, and man can still read everything away well.

I have now just crushed chalk in a mortar, mixed with a little water and thus my texts written fluently.
Conclusion, the text adheres well, also looks bright, but he is much better off without residue again ... and is more affordable.
Because the durability of the pins is also bad. Once used to dry the tips, which I then washed out, but that's a mess for the few drops of color.

I would never buy more, abschon they were good to find out that you can chalk stir liquid itself