What is the Snap Tool? Snap allows you to automatically snap to selected entities
What is Merge Tool? Allows you to add two bodies together, and keep the area that is common to them.
From the Main Toolbar select the Snap Tool (it looks like a magnet) Or you can do CRTL ” to open the Snap Tool.
Once the Snap Tool has been selected you need to select the faces you want to snap together, start by selecting the top face of the first box.
We now have both boxes snapped together, we now want to make them one object using the COMBINE MERGE TOOL
From the Main Tool Bar, select Combine then Merge.
Once you select the Merge Tool you will be prompted to select a Target and Source object. Select one box as the Target and the other as the Source to get one object!
BEFORE PROCEEDING SAVE YOUR PROGRESS!
Go to the APPLICATION MENU in the top left corner, then select SAVE and SAVE TO COMPUTER