Last updated on November 15th, 2019 at 05:47 pm
Sometimes an electrician, plumber, carpenter, DIYer or hobbyist encounters somes tasks that need making neat circular holes through material for rounded fittings. For example, an electrician may want to drill a hole into a junction box, a carpenter may need to drill through a wooden door to install a door lock or a plumber may have to drill a hole through a stainless steel sink to install a faucet. All these tasks need very neat circular holes that can only be easily made with the right set of bi metal hole saw kit.
A typical hole saw set has several circular hole cutters of different standard sizes that allow you to drill holes of different sizes into material. This article is a comprehensive review of the top 5 best hole saws for wood, metal, and plastic that have over 10 pieces of blades.
Comparison Table for 5 Best Hole Saw Sets
|Milwaukee Hole Saw Kit 28 Piece 49-22-4185||Lenox Hole Saw Kit Big Daddy 26-piece Set||DEWALT D180005 14 Piece Master Hole Saw Kit||Bosch Hole Saw 25-Piece Master Bi-Metal Hole Saw Kit||Tacklife Hole Saw Kit PHS01C 16 pieces 3/4’’-5’’ Full Set|
|Buy from Amazon||Buy from Amazon||Buy from Amazon||Buy from Amazon||Buy from Amazon|
|No. of Pieces||28||26||14||25||16|
|Hole Saw Sizes||3/4 in, 7/8 in, 1 in, 1-1/8 in, 1-1/4 in, 1-3/8 in, 1-1/2 in, 1-3/4 in, 2 in, 2-1/8 in, 2-1/4 in, 2-1/2 in, 2-5/8 in, 3 in, 3-1/4 in, 3-3/8 in, 3-5/8 in, 3-3/4 in, 4-1/8 in, 4-1/4 in, 4-1/2 in, 4-3/4-in||3/4 In., 7/8 In., 1 In., 1-1/8 In., 1-3/8 In., 1-1/2 In., 1-3/4 In., 2 In., 2-1/8 In., 2-1/4 In. 2-1/2 In., 2-11/16 In., 3In., 3-1/4 In., 3-3/8In., 3-5/8 In., 3-3/4 In., 4-1/8 In., 4-1/2 In.,4-3/4 In.||3/4 In., 7/8 In., 1In., 1-1/8 In., 1-3/8 In., 1-1/2 In., 1-3/4 In., 2In., 2-1/8 In., 2-1/4 In., 2-1/2||3/4 In., 7/8 In., 1 In., 1-1/8 In., 1-3/8 In., 1-1/2 In., 1-3/4 In., 2 In., 2-1/8 In., 2-1/2 In., 3 In.;||3/4 In., 7/8 In., 1-1/8 In., 1-1/4 In., 1-1/2 In., 1-3/4 In., 2 In., 2-1/2 In.,3In., 3-1/2In., 4 In., 5In.|
|Package Dimensions||16.5 x 9 x 4.5 inches||8 x 12 x 4 inches||3 x 9.8 x 7.3 inches||5 x 8.6 x 9.7 inches||7.7 x 6 x 1.5 inches|
|Weight||14.4 pounds||7.74 pounds||4.9 pounds||6.4 pounds||2.2 pounds|
|Country of Manufacture||United States||United States||United States||Germany|
|Warranty||Limited Lifetime Tooth Break Warranty||90 Days Warranty||3-Year Limited||24-Months Warranty|
|Buy from Amazon||Buy from Amazon||Buy from Amazon||Buy from Amazon||Buy from Amazon|
Detailed Review of Best Bi-Metal Hole Saws
Milwaukee Hole Saw Kit Review – 49-22-4185 28 Piece
At the top of the list is the Milwaukee 49-22-4185 28-Piece All Purpose Professional Hole Dozer Ice Hardened Hole Saw Kit. It includes a staggering 22 ice hardened bi-metal hole saw blades nicely packed in a compact plastic carrying case together with other accessories. The hole saws feature the latest and strongest tooth form in the industry known as the RIP GUARD™. They also have a Limited Lifetime Tooth Break Warranty. However, that does not mean that the teeth are weakly designed. As a matter of fact, each tooth is built with more steel along with 8% cobalt behind the cutting edge for added strength. This guarantees increased productivity on the worksite, as well as continued hole quality. The hole saw blades can cut holes as small as 3/4 inch and as large as 4-3/4 inch in width.
One of the most time-wasting activities when using holes saws is removing stuck plugs, especially when cutting through sheets of wood. On average, a minute is wasted trying to remove a stuck woodcut.
To reduce this downtime and increase productivity the Milwaukee hole saw blades feature an all-access slot design that allows full access during plug removal. As a result, plugs are removed easily and faster by applying leverage at multiple points hence saving time and increasing overall jobsite productivity. Lastly, the Milwaukee hole saw kit includes 3 quick change arbors with 1/2″ shanks for the different hole saw sizes.
Lenox Hole Saw Kit Review – The Big Daddy Set
Packed in a nice little molded-plastic blue and white carrying case, the LENOX Tools Bi-Metal Speed Slot Hole Saw Kit delivers among others 20 pieces of commonly used bi-metallic hole saws. The sizes span between 3/4 inches and 4-3/4 inches. The hole saws are uniquely designed with a speed slot for easy removal of plug. More precisely, the speed slot on each saw has a copyrighted staircase design that allows you to easily pry out stuck wood plugs with an ordinary flat-blade screwdriver.
All the saws have large sharp teeth that are optimized to cut more efficiently and last for many cuts. They are also constructed with a thicker wall for increased strength and durability. As far as cutting speed is concerned, the hole saws brag the T3 technology in their construction which makes them cut through metal more easily while guaranteeing a life that is twice as long as the previous generations. Three snap-back arbors (1L,2L, & 6L) with 1/2″ shank and three pilot drills are also included in the assortment.
Dewalt Hole Saw Kit Review – D180005 14 Piece Master
Primarily designed to drill holes into wood, plastic, and thin metal sheet, the DeWalt hole saw kit packs 11 holes saws of different sizes among other accessories. With this hole saw set you can drill holes as small as 3/4″ and as large as 3 inches. The assortment also includes 2 tool-free mandrels that accommodate the different sizes of hole saws. The first four smaller sizes hole saws fit onto the small mandrel by simply screwing them on. The other larger sizes use the mandrel that has two injector buttons. Both mandrels have hex shanks of different sizes. The shank of the larger mandrel is 7/16 inches in size while that of the smaller arbor is 3/8″ inches
The two injector buttons or prongs on the larger mandrel keep the hole saws in place for more secure operation. In order to install a hole saw, you first need to pull back the mandrel, attach the hole saw, then snap the injector buttons into the two holes on the hole saw to lock it. All these accessories are packed nicely in a fantastic molded-plastic carrying case that keeps it compact on your workbench.
Bosch Hole Saw Set Review – HB25M Bi-Metal 25-Piece
Albeit quite bulky, the Bosch 25-Piece Master Bi-Metal Hole Saw Kit HB25M contains so many items, among them the 11 different sizes of hole saw blades. The sizes of the hole cutters span from 3/4 inches to 3 inches. Unlike other ordinary hole saws that burn their way into wood producing loads of smoke, the Bosch HB25M holesaws are made from 8% cobalt alloy that makes them heat-resistant thus resulting in less or no smoke during operation. The alternating sizes of the teeth, otherwise referred to as the progressor tooth design, allows the saws to cut a lot faster with more precision. The large teeth are optimized for fast clean cuts in thick materials while the short ones are optimized for thin materials.
Also contained in the kit are 4 small adapters and washers, 7 larger adapters, a quick change mandrel, and 2 pilot bits. The adapters are installed onto hole saws so that you can use them with the quick change arbor. One beautiful thing about Bosch’s hole saws design is that the saws can be used with standard arbors from other brands.All you need to do is to remove the adapter and install the hole saw directly onto the standard mandrel and you are good to go. The mandrel too can be used with other standard circular hole cutters, provided you use the bosch adapters.
Tacklife Hole Saw Kit Review – PHS01C 16 Pieces Full Set with Mandrels
Characterized by its shallow hole saws, the Tacklife hole saw kit contains a total of 12 commonly used hole cutter blades. Their sizes range from 3/4 inches to 5 inches in width. The hole saws are made of heat treated carbon steel that makes them resistant to impact and wear. They are black in color, which makes them look neat even after the paint scratches off after some use.
The tacklife holesaws are made from hardened high carbon steel. These circular blades are meant to be used on soft wood, plywood, fiberglass thin PVC boards, and plastic. They are, however, not suitable for cutting through metal sheets, hard wood, or particle boards.
The tacklife kit includes other components such as an installation plate for the large blades, two different sized mandrels with replaceable pilot bits, and a hex key wrench for removing and tightening the mandrel bits. All the compoments are packed conveniently in a hard plastic package box that unfortunately does not have a handle.
- Select the appropriate size of the hole saw.
Choose the round hole cutter that is appropriate for the size of the hole you intend to make.
- Pick a mandrel.
Select the mandrel that properly fits the size of the hole saw. Normally, there are different mandrels for different ranges of hole saw sizes.
- For threaded mandrel, screw the circular hole cutter tightly on it.
If the hole saw mandrel is threaded, just screw the circular hole cutter on it using the following procedure.
- Take two open-end wrenches: one the size of the arbor shaft and another one that can hold tight the hole saw on its flat grooves at the bottom.
- While holding the wrenches firmly, turn then in opposing directions to tighten the hole saw onto the mandrel. Ensure it is tight enough so that it does not come loose when drilling.
How to tighten a hole saw onto a threaded mandrel
- For quick quick change mandrel, just lock the hole saw into place
It is super easy to install a hole saw on a quick swap mandrel. You just need to sit the hole saw onto the mandrel through the drive pin holes and lock it in place.
- Insert the assembled hole saw kit onto the drill chuck of you favorite drill driver.
Pick a drill of your choice and install the mandrel of the hole saw onto the drill and tighten.
- Ready to use!You are now ready to start drilling nifty circular holes with your hole cutter!
- Repeat the procedure if you want to change the hole saw and/or mandrel
How to Assemble a Hole Saw Kit – 6 Easy Steps
How to Use a Hole Saw
Time needed: 2 minutes.
After the assembly of the hole saw kit, the next step is to use it to drill holes. While most handymen know how to use a hole saw, a good number does not or rather does not know how to use it effectively and safely. The following is a procedure for using a hole saw.
Warning: Ensure that you wear protective clothes, glasses, and heavy-duty pair of gloves before you begin to drill holes.
- Identify where you want to drill
The first step is to identify where you want to make a hole. You can mark the center with a pencil.
- Drill a pilot hole
Fit the drill bit to your drill and make a pilot hole into the mark you just made in the previous step.
- Install the hole saw and mandrel
Fit the hole saw and mandrel assembly into the drill. Ensure that the pilot bit sticks out further than the hole saw itself.
- Position the drill
Direct the drill perpendicularly onto the material you want to drill through.
- Begin to drill
Start to operate the drill. The pilot bit will guide the drill.
- Flip the material
If you are working on a thick sheet of wood, just drill about halfway through and flip it over. The pilot hole will give you a perfect index to finish the cut.
Tip: Drilling from both sides gives you a clean cut that does not have any tear out.
- Avoid twisting your wrist when operating the drill
Hole saws larger than 3″ tend to grab when you start to cut in. That pull may cause strain or even twist on your wrist. For such cases, use a drill that has a handle on it so that you can have both the drill and the handle against your body to keep it from twisting.