At first glance, it may seem like a logical equation: the slower you go, the better you cut.
And that is true… but only up to a certain point.
In the real world of the cutting room, cutting quality depends on a number of factors that often have more impact than speed alone.
Sharpening: the first real factor
The first element that naturally comes to mind is blade sharpening.
Proper sharpening makes the blade’s job easier, improves penetration into the material, and allows for a clean and precise cut.
A well-sharpened blade can work effectively even at higher cutting speeds, while a poorly sharpened blade forces the machine to slow down without guaranteeing good results.
Blade speed: less marketing, more reality
Another parameter that is often overrated is blade speed, meaning how many up-and-down oscillations the blade performs.
There is no real need to work at 6,000, 7,000 or even 8,000 cycles, as is often advertised.
On standard materials, in about 90% of cases, values around 4,000–4,500 cycles are more than sufficient to achieve a clean and stable cut.
Increasing blade speed beyond that does not automatically improve cutting quality and, in some situations, can actually make it worse.
Sharpening symmetry: a critical detail
There is another aspect that is often underestimated but is extremely important: sharpening symmetry.
When a blade is sharpened symmetrically — with the left and right sides consistent with each other — it tends to stay straighter during cutting.
An asymmetrically sharpened blade, on the other hand, is more likely to bend or deviate, especially on demanding materials or greater thicknesses.
A blade that cuts straight:
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delivers better quality
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vibrates less
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maintains performance for a longer time
And this is where cutting quality truly makes the difference.
A balance of factors
Cutting quality is never the result of a single parameter.
It is always the outcome of a balance between:
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sharpening quality
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blade symmetry
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blade speed
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cutting speed
This is a first set of aspects worth paying close attention to.
In the next articles, we will look in more detail at other key elements, such as:
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toolpaths
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speed management in curves
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differences between straight cuts and transitions
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and why slowing down is not always the right solution