Almost impossible to

To knead the solution, you need a container: it is better if it is a bucket, not a basin, that is, something more elongated than wide, otherwise the plaster will freeze right there. And an electric drill and a mixer nozzle are also needed for it: the composition must be stirred in a thorough way, and it is almost impossible to do it manually. Knead so much solution to use it for half an hour, no more, otherwise it will freeze and strictly follow the instructions located on the package. The advice of “experienced” repairmen can be useful, but plasters are very, very different — the manufacturer still knows how to make the mixture.