[jonboy117]

I have several electrical pannels which I need to wire. Each metal enclosure has a knockout section which looks similar to a group of washers, each smaller than the previous which have been welded togeather in a 2 inch knockout.

My problem is that it is simple to remove the 1/2" knockout in the center, or remove the full 2 inches of knockout, but removing any of the rings in between is difficult. I want to remove the second ring to 3/4 an inch.

From looking on the intenet, it almost looks like buying a slug buster & creating an entirely new hole is easier than removing the knockout.


Any suggestions?

[tkrussell]

The concentric knockouts you mention can be a $/%*@h to remove sometimes.

If you end up taking out more than you need, you can reduce the knockout down to the desired size by using a pair of "donuts" (AKA knockout reducers).

Or punch your own where desired.

[Stratmando]

Try and get your Kleins or pliers where you can twistback and forth at the spot it is connected(between 1/2 and 3/4 Knockout, do that to a second point(if three), then twist whole piece to break free from remainder.