Download of Block CAD 1.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The program's installer file is generally known as Blockcad.exe. The most popular versions of the software are 3.1 and 1.0. The program relates to Photo & Graphics Tools. This free tool was originally produced by Block CAD.
From the developer:
You can save your models, or save pictures of them (.bmp, .jpg), even reuse a complete model as a part in another model. Everything can be controlled with the mouse, but it's also possible to use the keyboard for most of the commands, making 'routine building' more effective, and there is a minimum of text involved, to make it easier for kids.
You may want to check out more software, such as Block Manager AutoCAD Client, Cadig AutoField for AutoCAD x64 or CAD Viewer, which might be similar to Block CAD.
General
3D Modeling