If you're looking to drill holes in an EMT conduit, there are a few things you'll need to take into account. First, you'll need to make sure that the bit you're using is the right size. Second, you'll need to make sure that the speed at which you're drilling is appropriate. And finally, you'll need to be careful not to damage the conduit.
To start, select a drill bit that is slightly smaller in diameter than the screw or bolt that will be used with it. This will ensure a snug fit and prevent the screw or bolt from becoming loose over time. Next, set the speed on your drill to between 1,200 and 1,500 rpm. If you go too fast, you run the risk of damaging the conduit. But if you go too slow, the hole won't be clean and could cause issues down the road.
Once you have your drill bit and speed set up, it's time to start drilling! Begin by making a small pilot hole in order to help guide the rest of your drilling. Once your pilot hole is started, keep your drill perpendicular to the surface of the conduit as you finish making your hole. Remember to go slowly and be careful not apply too much pressure, as this could damage or distort the shape of your conduit.
Drilling holes into an EMT conduit doesn't have to be difficult - just follow these simple tips and take things slowly and carefully!