Question 1

How do I know which blade diameter fits my circular saw?

Accepted Answer

Check your saw's manual or the blade guard — the maximum blade diameter is always stamped or printed there. Common sizes are 165 mm for compact saws, 185 mm for standard handheld models, and 210–255 mm for larger corded saws. Never fit a blade larger than the rated maximum; it will contact the guard and create a serious kickback hazard.

Question 2

What tooth count should I use for cutting MDF and laminate?

Accepted Answer

For MDF and laminate, use a blade with at least 60 teeth, ideally 80 or more, with an ATB (alternate top bevel) grind. These materials are highly abrasive and will blunt low-tooth-count blades quickly, and the fine tooth geometry minimises chipping on the laminate face. A PTFE-coated blade also helps — MDF resin builds up on uncoated teeth and causes burning.

Question 3

Is it worth spending more than 35 £ on a circular saw blade?

Accepted Answer

Yes, if you're cutting hardwood, laminate, or doing finish work where surface quality matters. Above 35 £, you're typically getting higher-grade carbide, finer tooth geometry, and precision balancing — all of which translate to cleaner cuts and longer blade life. For rough construction cuts in softwood, a mid-range blade is perfectly sufficient.

Question 4

Can I use a Bosch blade on a Makita or DeWALT saw?

Accepted Answer

Yes, provided the diameter and arbor hole match your saw's specifications. Blade brands are not locked to saw brands — a Bosch 165 mm blade with a 20 mm arbor will fit any saw that accepts those dimensions, regardless of manufacturer. Always verify both measurements before purchasing.

Question 5

What's the difference between a ripping blade and a crosscut blade?

Accepted Answer

A ripping blade has a low tooth count (24–40), a flat top grind, and a positive hook angle — designed to cut quickly along the wood grain with aggressive material removal. A crosscut blade has more teeth (60–100), an ATB grind, and a neutral or negative hook angle for clean cuts across the grain with minimal tear-out. Using a ripping blade for crosscuts produces a rough, splintered edge; using a crosscut blade for ripping is slow and can cause burning.

Question 6

Are cheap circular saw blades actually dangerous?

Accepted Answer

Not inherently, but the risks are real if you push them beyond their limits. Budget blades from brands like Draper Tools and Yato are manufactured to lower tolerances — higher run-out, thinner carbide brazing, and no expansion slots. This means they're more prone to vibration, heat warping, and tooth loss under sustained heavy use. For occasional light work, they're fine. For prolonged cutting in hardwood or abrasive materials, a blade failure mid-cut is a genuine hazard. Always check the blade's maximum RPM rating matches your saw.

Question 7

How often should I replace or sharpen a circular saw blade?

Accepted Answer

Replace or sharpen when you notice burning on the cut surface, the saw requires noticeably more force to push through material, or the cut edge becomes rough and splintered. Carbide-tipped blades can typically be resharpened two or three times by a specialist before the teeth are too short to be effective — worthwhile on premium Festool or Bosch blades, less so on budget options where a replacement costs less than the sharpening service.

Circular Saw Blades Price Comparison

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Circular Saw Blades Price Comparison