3.15 Inches/80mm Bi-Metal Hole Saw with Pilot Bit & Arbor

I purchased this hole saw because I need to install some ports in my kayak. Oddly enough, a 6-in port requires a six and a half inch hole saw. I had a 6 in, but it just was too small. This one is a good quality. It works really well. It arrived quickly. And it did the job with no problem at all. If you need a six and a half inch hole saw this is the one.

So far I have successfully cut one hole in 3/4 inch particle board. Based on that light use, it worked wonderfully.

got it to cut nine holes for recessed lights in some 3/8 bead board plywood, cut through no problem - only minor issue is once the saw had finished cutting through the hole, if i didn't slow up the drill immediately, the saw would spin off the arbor and fall to the floor, even after really cranking the arbor nut with a crescent wrench it spun off, so be careful to not have your feet directly under where you're cutting. by the last bunch of holes i figured out how to not have it spin off. also like the spring on the starter bit which pops the piece of wood out of the saw automatically. haven't tried on sheetrock yet but presume it would be even better. can't speak to longevity, but cut through the ninth hole as smoothly as the first.

Worth the money. Drilled 4 holes in 5 minutes. Heavy duty.

First off, the negative reviews are accurate!! This hole saw comes with an arbor with no locking mechanism.. Newton's first law of physics tells us that an object in motion, stays in motion unless acted upon by another force. Let's think about this for a min. Hole saw spinning insanely fast at the tip of your hands and probably really close to your face with a arbor with no lock = as another review stated "spinning death trap"! When the drill stops, the arbor stops, but nothing to stop the spinning teeth of JAWS. Again, newton's first law tells us it is going to keep spinning until you just can't stop yourself from trying to catch it... Other reviews have detailed the results of that science experiment. So, should this be sold as it is, NO! This hole saw does have the holes for the locking pins to mount in. Go buy a locking arbor as you see in the picture. I the the big box stores all sell them and I am sure you can find them on Amazon. Do like I did, keep the bits and throw the arbor in the scrap metal pile. I only bought the 60mm hole saw because the crazy 6" LED lights I bought off amazon were nearly 6.25". Unless you like paying $90 for a hole saw of name brand that your only going to use once or twice, this is the perfect product. It cuts well and clean. Had no issues going through 1" pine and 1/2" ply wood to get my lights mounted. Just like any hole saw with so many teeth, it clogs up easily in pine or soft wood. You will get annoyed stopping to clean the teeth out, but I have name brand expensive hole saws much smaller that do the same thing in soft woods. I included a picture of the hole saw with the arbor that comes with it and an arbor I already had for the name brand hole saws. It threaded right in and pins lined up. So unless you just like challenging the laws of physics, I highly recommend you purchase a better arbor or dig through your tool chest and find one that fits. Highly recommend the product if your not a professional electrician installing can lights all day long, if so go purchase the $90 name brand carbide tipped hole saw.

I needed to cut a 7-1/2 inch hole in a piece of 3/4 inch plywood. I found this hole saw on Amazon at a very reasonable price, but some of the reviews were downright frightening, citing safety issues. The hole saw was well made, having a 1/4 inch plate and a 12 gauge cutting edge. The teeth were sharp and had a nice offset, so sawdust would not bind the saw. The center hole was not quite threaded all the way through, so I had to ream it out a little. When turning, it had minimal wobble, which is always an issue for large hole saws. Having a lot of experience using hole saws and hand tools to drive them, I knew this large size hole saw needed special handling, especially in plywood. I used my drill press and a different shank that attaches to the hole saw plate, with a very low speed of 250 rpm. Using very light pressure to drill, the saw easily and accurately cut the hole as seen in the photo. I would only recommend using a hand held drill for large hole saws (> 4 inches) when drilling in drywall or a very light or very thin material. This particular hole saw was a real bargain at the Amazon price, especially for a one time use.

Size seemed correct for my application. Cut the holes I needed in dropped ceiling tiles, and drywall. Worked fine, but I'm a little disappointed in the sharpness of the teeth, not sure it would cut well in wood. Seems solid, but loosens up while using. Price was reasonable and it did the job ok, but I wasn't overly impressed.

I am installing 24 recessed lights in an office suite to replace these ugly fluorescent lighting boxes. The system ceiling panels are lightweight so using this drill/saw could have been a challenge, as you can not really push hard (the panel would pop up). Not a problem for this hole saw. I put my wireless drill in the low-speed setting and let the saw do the work. The cleanest cut I have ever made in a ceiling panel. (do take the spring off the drill bit, as the ceiling panel will lift if is stays on. Minor issue is that you can not secure the red saw to the drill bit, which means that after each cut, due to the flywheel effect, the saw may turn itself loose. Not a big deal, but something to be aware off.

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