Joe West wrote:
> Hi
> I want to make a scraper for flattening plane bottoms.  I would like to 
> use a machinist carbide insert for the business end and make a handle.  
> I can't figure out the labeling system on the inserts (ex: SPG422).  
> Also, I don't know what grade of carbide to get for cast iron.  Does 
> anyone know what would be a good size, shape, and edge treatment for the 
> insert?  Any ideas on how to make a handle?

Scraping is slow, but surface plates and "blue" are good.

> 
> Finally is Dykem "Hi Spot" the ink I need for my Far East granite plate?

Certainly is. Cheap, but (I'm told) sometimes hard to find.

> 
> Thanks in advance for any help you can give.

http://www.geocities.com/plybench/flatten.html

You're welcome :-)

    BugBear

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