In this post you will find from where to find and install Sketch up Make CAD Design tool.

SketchUP make is free tool to use other have 30 days trails.

Download link of SketchUp Make
https://www.sketchup.com/download/make

You need to Create Login ID, you can use you google id to login and it will ask for for what usage you want to download.

You can Select 3D Printing and select you OS and Click on Submit.

Download will automatically start.

Average size of Windows 64 bit version is 148 MB.

Below are Direct Download link

SketchUp for Windows OS 64bit

SketchUp for Mac OS