This article aims to show how to effectively use innovation in the form of 3D printing to create simple, smart, and cheap products, which will lead to more efficient product control, reveal defects in conventional engineering production, and prevent blemishes. The article is focused on the detection and prevention of defects in classic Czech engineering manufacture using an innovative solution, which connects conventional production and SMART technology of 3D printing. The motivation of this article is to show how using SMART 3D printing technology in combination with the Poka-Yoke methodology is possible to cleverly streamline conventional engineering production and thus achieve higher productivity, which results in increasing the company's competitiveness in the market in the context of Industry 4.0.