HES Universal Mounting Tabs - Mount inside hollow metal and aluminum jambs

now we are tasked with putting an electric strike in a hollow metal frame we know it's metal and we know it's hollow so what is the right tool for the task well in the old days and what I originally started doing when I was installing strikes in the beginning eighth inch drill bit a file drew lots of little holes all the way around the opening inside your mark line connect them together and then filed them all clean to our line not very efficient things get better hacksaw file theories still the same you replace the drill with the hacksaw make your marks and then file them out to the lines real world tip small tools small mistakes this is not a small tool you can see that if you happen to make a mistake with this tool you have a lot of damage that you're going to have to clean up I do this every day my tool of choice is the rotary tool dremel Black & Decker doesn't matter just get the f