The following how to DIY Video teaches you how to make hand made drill saw. You can make it at your home too. It would be a great fun. 

Source: Youtube

After going through the video you will learn how to make drill saw at your own.

Being a mechanical engineer in the freshman year these stuffs are great to try. Even schools can introduce them to get the students hands on experience on such things.

Please share your comments after watching the above video.