STEP 2: Cut a 2-1/4" hole in the bottom of the conduit box
The hole is larger than the previous 1-1/4" hole we punched in the cover as we want to leave enough room for the inside edge of the heating element.
A hand drill will work too, but a drill press is much faster, if you have one handy.
One of the best tools that we added to our workshop recently was a drill press - it makes cutting holes so much easier and more accurate than we could have ever imagined.
A drill press doesn't have to take up much space and many are available for considerably under $100. It'll come in extremely handy later on when we cut holes for our control panel.