Can a 5.5 circular saw cut a 2x4

The larger and wider the blade, the more power is required to drive it through wood. When we are talking about corded tools, this usually translates into a question of weight and over-all size of the saw. Using a very large and heavy saw for light duty work is simply cumbersome and tiring. When we have lighter duty work to accomplish, we can scale down the entire saw by scaling down the size of the blade and as a consequence the power required to drive it.

In recent years another factor has entered into the equation with the advent of cordless or battery operated tools. Here power comes in limited quantities and hence the availability of power begins to dictate the scaling down of the saw blade. In addition to the question of diameter, there are now a whole new range of thinner saw blades, all seeking to allow more cut on a given battery charge.

There are some reasons for the specific diameter of saws that we see, historically and with cordless driven changes.

When power availability was a minor consideration, the standard portable circular saw blade was 7-1/4 inches in diameter. Why? Because it would easily cut through 2x4's at 90 degrees, but it would also easily cut through a 2x4 at a 45 degrees bevel.

On the larger saws, a 10 inch blade will go through a 4x4 at 90 degrees.

The lighter 5-3/8 inch saw blades would cut through that 2x4 at 90 degrees, but could no longer get all the way through the wood at a 45 degree bevel. So they could cut the occasional 2x they were more generally used for 1x stock and panels.

Small panel saws and tile saws, designed for maximum control where little power was required went down into about 3-3/8 inch diameter blades.

Also the depth of cut for a given diameter of saw is limited by the size of the motor itself. The invention of the flat bottom motor many years ago, or the even more compact European induction motor, permitted more saw blade to stick out beyond the motor housing for a deeper cut. With the new battery technology, where diameter of blade becomes critical in the competition for more board feet per battery charge, we are now working with DC motors, which permit those same 45 degree bevel cuts with a smaller diameter blade simply because the motors are smaller. Hence today you will see the standard workhorse for a cordless saw is 6-1/2 inches diameter rather than 7-1/4. It is all a question of getting just barely the depth of cut we need with the narrowest and smallest diameter blade we can manage.

Another interesting note is that with different size blades, the motors turn at different speeds. Conversely, each motor has an ideal sized blade. That is because there is generally an ideal speed at which the cutting tooth should dig into the wood. The larger the diameter of the saw, the fewer revolutions per minute (rpm) it requires to get the tooth moving through space at the same linear speed. So small saws tend to turn faster -- unless they are optimised for cutting hard materials like ceramic tiles, then they may turn slower. You probably didn't realise that the diameter of the blade had so much to do with power and cutting speed.

I have a Ryobi 18v cordless circular saw (unfortunately for you, part of a kit). The Ryobi kit is an *excellent* deal for the price. I got mine for <$150 for the circular saw, sawzall, drill, and flashlight, as well as a pair of 18v batteries.<BR><BR>Consumer Reports liked their kit, and gave it a very positive bang for the buck rating. They ran a report on cordless tool sets like this a few months ago, and it might be worth checking your local library to find the article in a back issue or their yearly overview book.<BR><BR>The Ryobi cicular saw is a 5.5" saw, and it can cut a 2x4, just barely. Given the choice, I'd consider something slightly larger (a 6.5" or 7.5" would be a decent compromise). The Ryobi handles 3/4 inch oak and pine plywood well, and the fine kerf blade is great for quick, clean cuts.<BR><BR>For general around the house work - not sustained, long jobs, the small circular saws are great. The keys in my mind are finding one that is balanced how you like it, that has a decent amount of power (18v in my mind is sufficient, but I wouldn't go lower voluntarily), and that has a blade large enough to cut what you want to cut. Also, keep in mind the prices of replacement blades and if your manufacturer is the only one that uses that size. I also wouldn't want to use one of these to cut really heavy things like kitchen counters or well aged walnut.<BR><BR>As for where to get them, Amazon's Tool Crib sells quite a few varieties, and you can often find them at Home Depot as well.<BR><BR>Z.

Although called a 2×4 which means 2” in depth and 4” in width, the actual size is different. This may seem strange at first, but the actual size of a 2×4 is really 1-1/2” x 3-1/2”. This means that you have a half-inch less on the depth and width compared to what the name states.

This is important information when considering what size saw to use when cutting 2x4s. It means that using a saw or blade that is not quite up to cutting 4” can be used if you can have it cut 3-1/2”. But more importantly, understanding the exact dimensions of a 2×4 can help you plan out your projects with greater precision. It is true that in many cases the ½” does not make much of a difference, especially in structure or framing projects. It may in terms of getting a precise measurement for certain jobs.

Power Saw for Cutting 2×4

Today, power saws are the most commonly utilized to cut 2x4s. This is because power saws are easy to use, accurate, and considerably faster compared to hand saws. What follows are 5 most common types of power saws that you can use to cut 2x4s to their desired lengths.

Circular Saw with Speed Square

The circular saw is a portable power saw that uses a circular blade. You push the blade into the material as opposed to a table saw where you push the material into the blade.

You can use the standard 5 ½″ circular saw to cut 2x4s. Mark your cutline on both sides and make the cut on the first side. Reverse the 2×4 and pass the blade through the marking to finish the cut.

If you want to cut the 2×4 into half in a single pass, you need a 6 ½″ circular saw, which will give you just enough depth of cut to slice through it. A 7 ¼ -inch circular saw will cut through the 2×4 wood even at 45° bevel.

DeWalt 7 ¼-Inch Circular Saw – Click to Check Price

Arguably, a miter saw is better in terms of accuracy and speed, but a circular saw can work quite well if you have a speed square that lines up your cuts. The circular saw is mostly used to cut straight lines and angles into the wood. While not as quick or efficient as the table saw, the circular saw is far more portable and can be used on wood that is risky for a table saw to cut.

Use Speed Square

A really good technique to get straight cross-cut with a circular saw is to use a speed square. You can either clamp it in position or hold the speed square with your free hand and move the saw against it to get a perfectly straight cut.

Miter Saw

This type of saw is used for cutting precise angles in the wood. The miter saw is the best saw to cut 2×4 lumber precisely with excellent repeatability. It can cut the lumber into half (cross-cut), angles (miter), and bevels with clean cut-edges.

The standard 10-inch miter saw can cut the 2 x 4 at 90 degrees as well as 45 degrees.

The miter saw is made for precision, repetitive, productive work with multiple 2x4s or other pieces of wood. It is a lot easier to use a miter saw to make accurate crosscuts and angled cuts on 2 x 4s. The ability to cut precise angles and bevels is convenient when want to join the wood together.

The downside is that the miter saw is expensive compared to a circular saw. Also, it is and not a handheld tool, which means if you want to trim wood that is already assembled, then a miter saw may not be the right tool.

Table Saw with Cross Cut Sled

The table saw is a fantastic tool for ripping. However, if you are using it to cross-cut 2 x 4 wood, use extreme caution. The miter gauge that came with the saw may have play in the slots and could result in serious kickback.

The solution? Crosscut Sled.

When using a cross-cut sled, you can efficiently cut 2x4s with ease. The sled allows you to feed the wood into the saw properly and get the angle you want for efficient cross-cutting.

Reciprocating Saw

Unlike all the above tools where the blade spins, a reciprocating saw is one where the blade moves back and forth. You can use a reciprocating saw to cut 2×4 lumber easily. However, you can’t make a precise cut like a miter saw or Skilsaw, and cut edges are usually rough.

A Reciprocating saw or Sawzall is an excellent portable saw for demolition and remodeling work. You can also use it to trim and size wood where accuracy is not the main criteria.

Hand Saw for Cutting 2×4

If you do not have an electric or power saw available, you can use a hand saw to manually cut 2 by 4 lumber. While they demand more elbow grease from you, most hand saws are inexpensive and safe to use. If you only need to cut a few wood pieces for your DIY project, then I recommend either of the following hand saws.

Back Saw

A backsaw looks like a typical hand saw. The difference is that it has a rib on the back of the blade for greater strength and control. The back saw is generally used for precision work and is often paired with a miter box.

The back saw also has teeth on the blade that are closer together so that more precise, clean cuts can be made into the 2×4.

Japanese Pull Saw

This unique saw looks more like a meat cleaver in its design. It consists of a long, straight handle with the blade on the end. Unlike most European saws that cut on the push stroke, this blade cuts on the pull stroke for greater precision. This makes for a narrower, cleaner cut that is perfect for cutting apart 2x4s.

The downside is that it is difficult to get your weight onto the blade for faster cutting. Plus, the pull saw is designed for softwoods as hardwoods tend to be too difficult for it to cut efficiently.

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