5 inch HSS BI Metal Hole Saw Cutter 1-1/2 Depth with Big Arbor for Wood Metal

Its actually very hard to find a whole saw that is bigger than 7in in the market. This hole saw not only gives me the capacity of drill big hole at one shot, also generates surprisingly clean edges. I think this is probably due to the sharp teeth and high quality steel that this saw has. A strong buy!

When mounting the mandrel to the hole saw. The pins were hard to get in the hole saw clock to match the pins. I had to put tape on the mounting surface to get a tight fit. Secondly the set screw for the drill bit would not screw in. Had to chase the threads. There was tiny pieces of metal in the thread. Hope there is a resolution?

Arrived on schedule. Good quality, cut 4 hole in 1 /2 plywood. Came with the arbor, 2 center bits, a bonus smaller hole saw and a small tape measure. If I needed to use a hole saw every day, I buy a Lennox or Diablo. This is perfect for the few times Ill need to use it.

Kit includes 2 drill bits, 1 for wood & 1 for metal. Fits a 3/8 inch chuck. The box arrived in great condition but the wood drill bit was broken in 2 pieces.

Needed to cut some holes for kitchen exhaust pipe, and this worked spectacularly cutting through some pine. But, then I had to cut through the roof, and of course asphalt shingles present a problem. But, that was the last hole so I committed myself. It got through, eventually, but I dont think it liked it. In a couple years when I need to cut another 6 hole Ill give it another try, but he already did his duty so I wont complain if he takes a bit longer.

Make sure you use a drill that has a second handle for support. Go slow and steady pressure to make the hole otherwise it will bind. But after cutting through a tongue n groove ceiling for 6 holes, I will still have use of this holesaw… the one flaw is that the drillbit provided has to be tightened many times throughout use. Overall this was a good buy.

I like the price because it includes the two hole saw but I prefer the ones with a quick release the measure tape is super basic, but definitely it’s worthy the package, definitely not to be used on plaster I use it a couple times on plaster walls but it takes the sharpness from the saw.

Very sturdy and durable. What youre cutting will get stuck but there are holes to push product out.

I bought this cheap 5 holesaw to cut through a 1 thick piece of steel. Not just any steel, it is 4140- a chromium molybdenum manganese alloy. But wait- not just any 4140, it is hardened 4140, 32 on the rockwell C scale. A lot of 4140 is sold in the annealed state for easier cutting, but then needs to be hardened afterwards to gain the strength benefits of this alloy. I verified the 32Rc myself, cause I believe it matters for what Im making. Anyway, this holesaw cuts it fine. I ran it at about 70 rpm, a little faster than 1 rotation per second. A little less than 100 fpm linear speed. Using a pecking motion, lubrication, allowing chips to clear. Many drill presses and most hand drills just wont go that slow. If you put this in a hand drill and think youre gonna cut even a piece of sheet metal, its going to be hard to control, and if you spin it fast (like the 600 rpm speed that seems slow in your 1/2 drill) you could probably dull this in seconds. That is just the nature of a large diameter cutter like this. If you overspeed it in metal, you WILL ruin it, in seconds. This saw isnt magic metal, and neither is one that costs 3 times as much. This was used in a milling machine..it is rigid, and can go slow. If used to cut a hole in your ceiling for a lamp, you could get away with a lot, none of this applies. The saw wasnt real round...I checked it and improved it a little by hitting with a hammer, checking, hitting, etc. BUT- more expensive brands are no better at all, they are always pretty out of round..unfortunate, but good enough. Tight quality control costs a lot. You want a $150 hole saw thats somewhat better? Ill deal with a cheap one, myself. It is a roughing tool, no more. It pains me to see most drills and holesaws oversped by users who then dull it and blame the tool!

This is a well made 8 1/4” hole saw, very rugged. Overall. I’d say it works very well. I’m glad I bought it and it worked well for me recently. There are a couple of things to watch out for. First, be sure the drill bit is deeply seated before tightening the set screw. I made the mistake of screwing the set screw right into the center of the shaft. It was no fun to get back out, but I was able to do it. The second thing to remember is that an 8.25” hole saw is big. There are 25.9” of teeth spinning around…and grabbing the surface of the material you are trying to bore through. My drill spun around pretty abruptly when all of the teeth contacted the surface. My second two uses were much more civilized