Hello.
I'm wondering if there is any concrete that is moldable like "foam" similar to caulking foam. I need it to make a pipe completely straight at the end. The joint should be completely straight. Right now it's about 3-4 mm shorter at the bottom of the pipe. I can't sand it down any further at the top. It will make the pipe too short. The pipe needs to be 3cm thick.
I'm grateful if someone could help me.
