With which putty do you plaster concrete walls?

my tip: go to the "Mörtelshop" (it's spelled with O and E, but that doesn't work here - always "corrected") forum. Sven Backstein answers questions about cement and concrete there, and I don't know anyone who is as versatile with it as he is. The man has helped me many times already, and I gladly recommend him.

There Sven Backstein answers questions about cement and concrete

Nice artist name (?)

Our goal is, of course, to get smooth walls

So "of course" it isn’t. We usually like a wall with some texture and life much more than the modern ultra-smooth. Lucky us – this time our taste led to a price reduction. We obviously immediately compensated with material...

Nice artist name (?)

I think that's really his name.

"the modern ultra-smooth"
For me, there is an important difference between "smooth" and "flat."
Smooth surfaces can have waves and dents, flat surfaces can have a rough texture.

I find it pleasant when you don't get scraped if you accidentally bump into a wall or scrape along it.

For a concrete wall that I planned with Mr. Brick's help, the concrete should be processed so that no sharp edges protrude anymore (formwork joints) and the corners are rounded. Then
Marfino Conkrete Surface Microcement should be applied between 0 and 5 millimeters thick. "For use, the white powder is mixed with water and can be colored arbitrarily by adding our pigments. .... a high-quality wall covering for interior and exterior, which is applied with a spatula or trowel. This allows very simple creation of attractive visible surfaces on walls, seamless bathrooms, and mineral furniture fronts."

I have not used it yet, but am already convinced and regret that, due to a change in plans, it probably won't come to anything.

There are all sorts of "mortars" there with so many properties that no ideas remain impossible (that's what I'm saying now )

For a concrete wall that I planned with the help of Mr. Backstein, the concrete should be treated in such a way that no sharp edges (formwork joints) protrude and the corners are rounded.

Exposed concrete without formwork joints is, in my opinion, caffeine-free tofu ;-(

decaffeinated tofu

hm ... delicious .... top quality