Marvin,
I use reamers, peg box, from Dick with this coating. I think it is a good
thing. I use em hard and they seem to last longer in maple than the
uncoated. I use both. I also use hand made rasps from China, at the
moment, and I find the hand made ones dull quickly in ebony. But the
machine made rasps seem to have a mind of their own and pull off to one
side just when least expected and convenient.
Ken
Marvin Paisner wrote:
> Galoots,
>
> The rasp discussion reminded me of a line of rasps I had seen offered by
> the German tool supplier Dick Fine Tools in their catalogue. Made by
> Herdim, the top of the line "Ultra Cut" cabinet rasp boasts more than
> 10,000 hand cut teeth, and sells for about 74 Euro's (I think the Euro
> and $US are close in value these days). There is a beautiful photo in
> the catalogue of this rasp.
>
> What I had not noticed before was that for another $20 you can buy this
> rasp with a "Cerid" coating. This coating is described in the catalogue
> as follows:
>
> "PVD (Physical Vapour Deposition) technology makes it possible to apply
> a thin ceramic film to metal surfaces to dramatically increase their
> resistance to wear. Our Cerid rasps have a 2 micro m. thick chromium
> nitrate coating which has been proven to be particularly beneficial in
> extending the life of carbon steel tools. The mat-silvery coating
> extends edge life at least five fold, reduces clogging and increases
> corrosion resistance without affecting the sharpness of the rasp."
>
> Any opinions on this technology? My guess is you wouldn't be sending
> this rasp out for sharpening before using it.
>
> Marvin Paisner
> Kootenay Lake, BC
> ... no Instruments of Destruction here, my choice is that Instrument
> of Torture the 5 string banjo. Old tools,
> banjos and motorcycles hmmm I'm getting old! ;^)
>
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