Engineered For The Trade


Many circular-saw manufacturers throw around claims they last longer, they’re more accurate and they’re the thinnest out there. Why are these qualities so important? Tool Torque thought it worth investigating.

Durability – this one’s easy. The stronger the blade the longer it lasts. That means better value for the working man. Durability also suggests the kind of tasks it can be used for, like construction or demolition, and is all about productivity.

Precision – we all want to do the best job we can, and the thinner the blade the higher the accuracy. The term ‘kerf’ is thrown around here, and it basically means the width of the cut. The thinner the kerf the more accurate the incision and the more blade control needed to deliver it.

For years manufacturers have been adding elements to blades to increase both these properties, and the most enduring appears to be carbide. Application of the carbide is equally as important because the rigours of the jobsite can take a toll.

Talk to an expert

IRWIN has unveiled its next generation of WeldTec circular-saw blade range featuring exclusive, welded, carbide teeth for outstanding strength1 . The new blades are designed for construction, demolition and specialty applications, so they’re ready to work harder and longer. To explore these principles Tool Torque set up a call with Jonathan Hall from IRWIN Tools and he had some interesting thoughts. “We developed these blades to ensure we make tradies as productive as possible,” said the beaming Jono. “Ultra-thin kerf blades deliver enhanced durability, great blade control and long product life2 without sacrificing speed. “The new WeldTec circular-saw blades allow pros to get more out of their tools, increasing efficiency and productivity on the job.” That’s ticking quite a few important boxes. But the real bite was the next bit. “The new WeldTec range has carbide teeth welded onto the blades, not brazed, and that creates a stronger tooth bond than other blades3 .” What Jono told us reinforced our findings.

There’s more!

Hall also pointed out the additional components reinforce strength and make for a long-lasting blade4 that delivers true, clean cuts. A PTFE (polytetrafluorethylene), nonstick coating reduces binding and gumming, increases cutting speed and reduces heat damage. Perimeter vents strengthen the core of the blade and enable fast chip ejection, while a laser-cut plate with expansion-control slots provides superior flatness over a broad temperature range with reduced warping and increased blade stability. It all sounds very hi-tech – because it is – but in the end it comes down to having the right blade for the right job. “Be it framing, ripping or trim/finish work, these construction blades are ultrathin kerf, and with the welded carbide teeth provide a 25 per cent stronger tooth bond5 that allows you to get more for your money delivering greater productivity per blade,” said Hall, starting to look quite excited. It seems there’s a lot more goes into blades than Tool Torque had thought and the WeldTec blades are right up there with most high-tech, high-productivity examples on any jobsite anywhere.