Homebrew PCBs

Hi Jan,
       I have the milling process put a starter hole in each pad 
during the milling process. Then I use a small drill press. I do
several boards a week. I like knowing when the drill bit is getting
dull. When the milling bit gets dull a burr shows up on the trace.
When a dull drill bit shows up in the middle of a drill sequence, you
have to stop and change the bit. That's if you are there to catch it!


                                   John



--- In Homebrew_PCBs@y..., JanRwl@A... wrote:
> Adam:  For a board with more than, oh, 30 or 40 holes, I can 
actually do it 
> FASTER by typing-in coordinates and then letting the machine do 
the "work"!  
> Repeatable, too!  For larger than the size-#57 bit I normally have 
in the 
> machine, I just "ream" with a larger bit on a drill-press, as there 
are only 
> a very few, when/if.
> 
> See my home-brew machine in PHOTOS (or is it "Files"??).  PET-
controlled!!!!! 
>  
> 
> Jan Rowland