Homebrew PCBs

Yes, that is the type I am referring to in the URL below.  Remember that I bought mine over 15 years ago so I obviously cannot comment on the quality of the current batch/brand.

 

Mine has been running for hours with proper lubrication without any problem.  Note in my picture that I made an adapter to provide a separate air in and exhaust port.

Bertho

 

From:  Charles R. Patton Sent: Saturday, February 26, 2011 14:20



I think he is talking about a "die grinder" as in:
http://www.harborfreight.com/1-8-eighth-inch-air-micro-die-grinder-47869.html
currently only $22.99. I have one of these, but never thought of using 
for a board drill. Neat idea. Don't know how long it'll last -- I've 
had mixed results with Harbor Freight tools. This one I've only used 
maybe a total time of 1 hour or so. It turns fast, but torque is not 
the best and I've never measured run out. Definitely want to keep it 
lubricated with the air mister.
Regards,
Charles R. Patton

Randy S. wrote:
> 
>
> Is that the actual name for it ? I cant find it on the harborfreight 
> website.
>
> Randy
>
> ________________________________
> From: Boman33 <boman33@... <mailto:boman33%40vinland.com>  <mailto:boman33%40vinland.com>>
> To: Homebrew_PCBs@yahoogroups.com <mailto:Homebrew_PCBs%40yahoogroups.com>  <mailto:Homebrew_PCBs%40yahoogroups.com>
> Sent: Sat, February 26, 2011 10:53:07 AM
> Subject: RE: [Homebrew_PCBs] PCB Drilling High RPM
>
> Sorry, I forgot to mention where the picture is.
>
> See: Bertho's Album in this group.
>
> Bertho
>
> ++++++++++++++++++++++++++++++++++++++++++
>
> From: Bertho Boman Sent: Saturday, February 26, 2011 10:17
> About 15 years ago I did a bunch of PCB drilling. I used a low-cost
> air-turbine. Often it goes on sale at Harbour Freight and similar 
> places for
> under $50 and the RPM is about 50,000 if I remember corectly.
>
> It is mounted on a linear slide and activated by an air cylinder. Sorry
> about the dirty appearance, it has been in storage since then.
>
> (What did Yahoo do to the picture?? It was perfectly exposed) Any
> suggestions how to avoid Yahoo destroying the pictures?
> Bertho





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