Homebrew PCBs

Some of you might find this interesting. I think I will be getting the plans:

http://www.stonehook.net/cnchome.htm

Regards,

Terry

[Non-text portions of this message have been removed]

--- In Homebrew_PCBs@yahoogroups.com, "Terry Owens" <jo001k1132@...> 
wrote:
>
> Some of you might find this interesting. I think I will be getting 
the plans:
> 
> http://www.stonehook.net/cnchome.htm
> 
> Regards,
> 
> Terry
> 
> [Non-text portions of this message have been removed]
>

A buddy of mine purchased then plans. They are well worth the 20 
bucks. They are very detailed and well drawn. They do include a parts 
list with reference numbers from McMaster Carr.

There is also a build discussion on CNCzone. 
http://www.cnczone.com/forums/showthread.php?
t=27660&highlight=ROCKCLIFF+ROUTER

Myc

The little 8 inch brake/shear unit is still available from several sources.
For starters, try ebay motors, or just google "8 inch brake shear.
Most sellers are asking about 150 to 175 bucks.  Not a bad price.

Looks like a nice unit, and if I was doing more than about four PCB's
per year, I'd think about getting one.

At present, I just use a carbine-tipped scribe to score the epoxy-glass 
board
and then snap it off over the edge of my work table.

If I recall, the carbide scribe cost about two dollars, but I can't remember
where I purchased it.

Roland F. Harriston
*********************

mycroft2152 wrote:
>
> --- In Homebrew_PCBs@yahoogroups.com 
> <mailto:Homebrew_PCBs%40yahoogroups.com>, "Terry Owens" <jo001k1132@...>
> wrote:
> >
> > Some of you might find this interesting. I think I will be getting
> the plans:
> >
> > http://www.stonehook.net/cnchome.htm 
> <http://www.stonehook.net/cnchome.htm>
> >
> > Regards,
> >
> > Terry
> >
> > [Non-text portions of this message have been removed]
> >
>
> A buddy of mine purchased then plans. They are well worth the 20
> bucks. They are very detailed and well drawn. They do include a parts
> list with reference numbers from McMaster Carr.
>
> There is also a build discussion on CNCzone.
> http://www.cnczone.com/forums/showthread.php? 
> <http://www.cnczone.com/forums/showthread.php?>
> t=27660&highlight=ROCKCLIFF+ROUTER
>
> Myc
>
>  


[Non-text portions of this message have been removed]

On Mon, 22 Jan 2007 18:36:16 +0100, Roland Harriston <rolohar@...>  
wrote:

>
> If I recall, the carbide scribe cost about two dollars, but I can't  
> remember
> where I purchased it.


You can make one from a broken PCB drill. Made one in school that still  
serves me well, when i can find it ;-)

ST

Ha!

Stefan Trethhan you are so correct!

I just went to the drawer in my worktable to fetch my carbide scribe and 
it is not there anymore!
And I just used it a few weeks ago. Funny how those kinds of things can 
appear and disappear
at will.

I have a bunch of snapped-off carbide drill bits, and I will try to 
mount one of them in a little
pin vise (used for miniature drill bits) and see if it works as nice as 
my missing carbide
scribe.

A diamond scribe would probably be better, but they cost a bit more than 
the few bucks
I paid for the carbide scribe.

Roland F. Harriston
********************

Stefan Trethan wrote:
> On Mon, 22 Jan 2007 18:36:16 +0100, Roland Harriston <rolohar@...>  
> wrote:
>
>   
>> If I recall, the carbide scribe cost about two dollars, but I can't  
>> remember
>> where I purchased it.
>>     
>
>
> You can make one from a broken PCB drill. Made one in school that still  
> serves me well, when i can find it ;-)
>
> ST
>
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBs
>
> If Files or Photos are running short of space, post them here:
> http://groups.yahoo.com/group/Homebrew_PCBs_Archives/ 
> Yahoo! Groups Links
>
>
>
>
>   


[Non-text portions of this message have been removed]

On Mon, 22 Jan 2007 21:05:45 +0100, Roland Harriston <rolohar@...>  
wrote:

> Ha!
> Stefan Trethhan you are so correct!
> I just went to the drawer in my worktable to fetch my carbide scribe and
> it is not there anymore!
> And I just used it a few weeks ago. Funny how those kinds of things can
> appear and disappear
> at will.
> I have a bunch of snapped-off carbide drill bits, and I will try to
> mount one of them in a little
> pin vise (used for miniature drill bits) and see if it works as nice as
> my missing carbide
> scribe.
> A diamond scribe would probably be better, but they cost a bit more than
> the few bucks
> I paid for the carbide scribe.
> Roland F. Harriston


Yes, stuff just hides all the time...

I'm not sure a diamond scribe would actually be better, since i don't  
think it has a narrow long tip.

The scribe we made in shool was to learn using a lathe, basically just  
round stock nicely turned with a taper at the front and knurled, then sand  
blasted. A hole in the tip to mount the drill (with loctite).
They used to cut a thread on the drill and into the scribe, and screw it  
in, but then they stopped making PCB drills with only the thin part  
hardened and you could no longer cut threads on the solid carbide drills.

I do not actually know how the broken drill was sharpened, i was ill that  
day and someone else did it for me ;-). But i always assumed they simply  
ground them by hand on a plain bench grinder.

Would be a 5 minute job to make a holder with a grub screw, especially if  
looks are not so important.
I keep all my broken drills, just for that purpose, although it might be a  
bit silly to keep them all since i didn't actually use one so far.

ST