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You Won't Need One Of These

In all seriousness, there is a similar tool that is very handy. The Rotobroach. The make very nice holes in sheet metal, especially if you need to make a hole in the firewall.

You can buy kits with various sizes.
 

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Need vs Want also has a time factor in the equation. I bought a Hougen RotaCut set of annular cutters 20+ years ago for a project I can't remember. They were expensive at the time. When the project was completed, I remember thinking they were great, but a waste of money for that limited project use. I've used them many times since over the couple of decades and each time I've been really pleased to have them, retrospectively seeing them as a really smart purchase. At this point in my life, I'm much more likely to buy tools from Harbor Freight than Snap-On.
 
When it comes to tools, we all have this problem differentiating between the words “need” and “want”….. 🤣
I remember the day my son came home from school after his teacher explained "need" vs "want". He explained it then said "I need a pair of <whatever name brand> shoes." I said no. You "need" a pair of shoes. You "want" a pair of whatever. Guess what he got?

By the way, I build a lot of log furniture. One tool is a 2" Tenon Cutter. It's basically a big pencil sharpener. I have a huge 1/2" drill to drive it. The log gets secured in a saw horse type jig. When it goes, it throws shavings everywhere. Almost broke my arm once when it hit a knot.
 
Dave's hole saw is clearly an aircraft tool used for cutting through the airport pavement to install an aircraft tie down.
 
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