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Re: [Homebrew_PCBs] Re: Do these diamond burrs suck?

2005-12-12 by Stefan Trethan

On Mon, 12 Dec 2005 01:27:49 +0100, soffee83 <soffee83@...> wrote:

> The drive belt usually stays on the lowest speed.


You should run carbide drills quite fast. 30000 RPM is not too fast for  
them.
A regular drill press is on the slow side in any setting, and might even  
have too much runout.

I bought them bits via ebay germany, don't remember the seller. Asked  
off-auction for what i needed and got a reasonable price so bought direct.  
Just search ebay, you want used bits that have been replaced in cnc  
machines routinely way before they were properly dull they are dirt cheap.  
Also, avoid assortments with sizes smaller than 0.6 you don't want to use  
them and they are plentiful 'cause of vias. Better get a seller where you  
can select sizes. I must have paid something like 0.2eur per bit.


ST

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