Thank you for the answers gentlemen.
Over in UK it's known simply as ceramic slurry.
- though I understand the German word just fine, it doesn't tell whet it's made from - whereas the English term is the same compound used by the "potters" to me. I might be wrong here though.
Jason, that sounds like a cheap solution.
But as earlier stated - I have way too many projects and absolutely not enough time for the majority of them .... so casting is not in the cards for me.