This article concerns problems related with experimental substantiation of a new promising method of thin-walled workpieces processing. The method is based on applying a software system that allows predicting technological deformations during processing. Using the system a technologist is able to pick rational cutting modes taking into consideration deformation predictions. The task of experimental verification consists in the development of the experimental scheme and the measurement sequence. This article describes an experimental facility, stages and results interpretation. Emphasis is placed on a deformed workpiece profile analysis. The article highlights the issues arising during the experiment organization. Authors suggest solutions using available general-purpose equipment.