Main Facts & Differences
between the best hand cut rasps available and CORRADI GOLD rasps

Why choosing a CORRADI GOLD rasp instead of expensive hand cut rasps?

Teeth thickness
Hand stitching doesnít allow a uniform, evenly raised tooth. On hand cut rasps, those teeth which are higher than others will leave scratches on the workpiece, while those lower will not work at all. GOLD rasps have always evenly raised teeth, since they are stitched using CNC machine tools designed and manufactured by Corradiís engineers.


Corradi GOLD Rasp
Equal teeth thickness, each tooth same height

Other Rasp
Unequal teeth thickness, higher and lower teeth

Other Rasp
Unequal teeth thickness, higher and lower teeth

Teeth density
Hand cut rasps, due to hand made process, have some areas with more teeth and some areas with less teeth, which means itís hard to reach the same result on the whole workpiece, since some areas (those with more teeth) will have a higher stock removal than others (those with less teeth). Furhermore this fact will let more difficult to guide the tool in the desired direction. GOLD rasps have always the same density as stated in the scale of cut table.


Corradi GOLD vs. other rasp
Equal vs. unequal teeth density

Corradi GOLD vs. other rasp
Equal vs. unequal teeth density

Teeth size
Hand cut rasps have small and widely spaced teeth, the space between one tooth and the other increases the risk of marks, while GOLD rasps have virtually no space between one tooth and the other, therefore a continuous working surface (they work more like sandpaper than rasp). The result will be a perfectly finished, smooth surface, which wonít need any further sandpaping.


Corradi GOLD vs. other rasp
Small and widely spaced teeth vs. bit bigger but regularly spaced

Teeth pattern
Hand cut rasps always present alignment of teeth. It means that when rasping in the same direction which teeth are stitched, the rasp will leave marks on the workpiece. GOLD rasps present a regular random pattern so, unless the direction of strokes, they leave neither scratches or marks on the workpiece, even if used by left-handers.


Corradi GOLD vs. other rasp
Teeth alignment vs. no teeth alignment

Corradi GOLD vs. other rasp
On the left, deep scratches left using a hand cut rasp on ebony

Hardness
The best hand cut rasps have a surface hardness of approx 59-60 HRc. GOLD rasps, made with special tool steel used for precision files manufacturing, have a surface hardness of 65-66 HRC. That means a longer service life and a long lasting bite even if working on hardwood (ebony, palisander, wenge, teak).
Tip (point)
Hand cut rasps not always come to a small, fine tip. GOLD rasps have always fine tips.


Corradi GOLD vs. other rasp
On the left see thick tip of a hand cut rasp;
on the far left also see unequal teeth thickness, higher and lower teeth

Straightness
Hand cut rasps are not always straight. GOLD rasps, thanks to robotic hardening, are perfectly straight.


Corradi GOLD vs. other rasp
Bent zone on a hand cut rasp vs. perfectly straight GOLD rasp


Furthermore each hand cut rasp is unique: when it does not work anymore you have to buy a new one which will have a slightly different teeth density or pattern: then you may not be able to reach the same result on the workpiece as before. When you buy a new GOLD rasp, you can make sure that it will be exactly the same as your old one: that means you can continue working the same way you have done before, without affecting the result.






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