 Also in the years 1942-1944 that predated the Warsaw Uprising, he carried on a secret production and distribution of soap, which in addition to providing financial relief for the participants, was done in order to accrue the capital and production means to restart a modest aviation factory come the war end.This was done jointly in an informal co-op with fellow aviation engineer Roman Berkowski and aviation designer Bronisław Żurkowski.The aforementioned effort to restart the private production of airplanes could not be realized in Communist Poland.