Re: [CAD_CAM_EDM_DRO] Holes in granite

Hi John
Where can I get more information on your $250.00 CNC machine?
AllanQuoting kz1927 <kz1927@...>:

> Making holes in granite is very easy to do.
>
> You have to use diamond bits and keep them wet.
> Harbor Freight has all kinds and sizes of diamond
> bits for very cheap.($5.00 -$30.00).I thought they'd
> be one time use junk(I got a set of 50 for $13.99),
> but Iv'e drilled 20 1/2" holes in 1/2" thick porcelain tile
> and haven't ruined a single one. That tile was the second
> hardest material I,ve ever put a hole in(carbide was first).
> You can get a highly polished and very flat piece
> practically free from a place that makes gravestones.
> They always have a piece where the grain wasn't just
> right or some little thing.
> I even had one place square up a chipped piece for me once.
> I used to have a leather company..that's how I know.
> One could get the granite,put it on the mill,make
> a little dam out of clay around where you want the hole,
> put an 1/8" of water in it,use a light touch...let the
> tips of the diamond particles just grind away.
> It goes pretty quick and is very smooth and clean.
>
> By the way when I made the holes in the porcelain,I thought
> that I might just sacrifice a carbide bit to get it done.
> The carbide turned Orange Hot and never made a dent...the
> diamond did the hole in less than 5 minutes.
>
> Hope that's of any use
> -John
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