Here we deal initially with a three-dimensional shape, and not with a flat pattern. The most time-consuming programs go beyond CAD and fall into creative 3D modeling. More sophisticated programs allow you to develop a 3D object based on existing standard models. The simplest computer-aided design systems are aimed at creating two-dimensional drawings and related documentation. The advantage of such software is in the accuracy of calculations required in mechanical engineering or in the design of technical elements where exact dimensions are important. The software automatically does all mathematical calculations, making it easier for engineers, designers and developers to handle their job. It is based on a two-dimensional technical drawing of an object. The technology works on the principle of geometry. CAD software allows you to model an object from a headphone wire clip to a rocket launcher. This technology has essentially replaced freehand drawing. The most popular software of this kind is CAD (computer-aided design).

In this article, we are going to review programs of both a basic and a professional level to help you acquire proficiency in the creation of models for 3D printing. Without it, you will be unable to use your expensive equipment, which will turn soon into a useless toy to be covered with dust in a closet. Modeling is one of the most important skills for 3D printing.

Freecad 3d to 2d drawing