Homebrew PCBs

Hello,

For example:
0.6mm = 24 mils
0.7mm = 27 mils
0.8mm = 32 mils
0.9mm = 35 mils
1.0mm = 39 mils
etc...
Convertion is: mm/0.0254 = mils

But, it si very necesary to prepare your components in your library
file to obtain a good result, a correct diameter from your mecanical
diameter dimmension, the part off Eagle are just for example, not sure
they are correct!!!

0.9mm, 35 mills are commonly use

0.8mm, 32 mils for IC, resitor, capa etc...

Patrick






--- In Homebrew_PCBs@yahoogroups.com, "Matthew Mucker" <matthew@...>
wrote:
>
> All,
> 
> I'm new to the DIY-PCB scene. I've just finished my first test etch
and am
> just overjoyed at the results I was able to achieve my first time
out of the
> gate.
> 
> I now need to look at drilling my boards.  Does anyone have any
> recommendations on what drill bit sizes I should get for general
> through-hole work?
> 
> Given an Eagle .brd file, what can I do to get an idea of the drill bit
> sizes I'll need?   I ran the CAM processor and opened up the .dri
file for
> one of my projects, which appears to be a good start... but how much
> tolerance should I allow? If the .dri calls for a .035, a .036, and
a .0394
> inch drill bit, I assume I can use a .0394 for all of them, right? 
(I mean,
> that's what... 4 and a half thousandths of an inch there.)
> 
> What rules of thumb do you use? What drill bit sizes are your most
commonly
> used sizes?
> 
> Thanks,
> 
> -Matthew
>