I've experimented a bit and I'm sold on scraping over sanding. The trouble
is I've never actually seen it done by an expert, I've only read magazine
articles and threads here, and watched the little videos on the FWW website.
I'm satisfied that I've got the scraper set up well, re: flattening, drawing
the burr, setting the hook, &tc. At least, it "feels" right and the surface
is way good.
My question is this: how long should a scraper edge/hook last before it
should be re-flattened and re-hooked? (Assuming I'm scraping common native
hardwoods, e.g. cherry, oak, walnut, planed by hand with a smoother, then
scraped a with Sandvik card scrapers). Should an edge last for 1-2 sq ft of
surface? 5 sq ft? 10 sq ft?
Also, is the duration of an edge a function of the quality of the hook, or
the set of the hook (e.g 5 deg vs 15 deg)?
As always, thanks a heap,
-jbb
"J.B. Bobbitt" <[email protected]> wrote in message
news:[email protected]...
> I've experimented a bit and I'm sold on scraping over sanding. The
trouble
> is I've never actually seen it done by an expert, I've only read magazine
> articles and threads here, and watched the little videos on the FWW
website.
> I'm satisfied that I've got the scraper set up well, re: flattening,
drawing
> the burr, setting the hook, &tc. At least, it "feels" right and the
surface
> is way good.
>
> My question is this: how long should a scraper edge/hook last before it
> should be re-flattened and re-hooked? (Assuming I'm scraping common
native
> hardwoods, e.g. cherry, oak, walnut, planed by hand with a smoother, then
> scraped a with Sandvik card scrapers). Should an edge last for 1-2 sq ft
of
> surface? 5 sq ft? 10 sq ft?
>
> Also, is the duration of an edge a function of the quality of the hook, or
> the set of the hook (e.g 5 deg vs 15 deg)?
>
Aggressiveness of the cut is a function of the angle. The bigger the burr,
the more aggressive the cut, and the shorter the time until it must be
repaired.
Heat is what does the fine edge in, perhaps even more so than abrasive
substances in the wood.
On Wed, 05 Jan 2005 02:16:42 GMT, "J.B. Bobbitt"
<[email protected]> wrote:
>I've experimented a bit and I'm sold on scraping over sanding. The trouble
>is I've never actually seen it done by an expert, I've only read magazine
>articles and threads here, and watched the little videos on the FWW website.
>I'm satisfied that I've got the scraper set up well, re: flattening, drawing
>the burr, setting the hook, &tc. At least, it "feels" right and the surface
>is way good.
>
>My question is this: how long should a scraper edge/hook last before it
>should be re-flattened and re-hooked? (Assuming I'm scraping common native
>hardwoods, e.g. cherry, oak, walnut, planed by hand with a smoother, then
>scraped a with Sandvik card scrapers). Should an edge last for 1-2 sq ft of
>surface? 5 sq ft? 10 sq ft?
>
>Also, is the duration of an edge a function of the quality of the hook, or
>the set of the hook (e.g 5 deg vs 15 deg)?
>
>As always, thanks a heap,
>-jbb
>
the edge lasts until it don't cut no more.
<G>
you can do several rounds of burnishing before you have to go back to
the stone. first run the burnisher flat on the face of the scraper to
"unhook" the burr, then at an angle to rehook the burr. I usually get
about 3 times of that before I have to go back to the stone.