Homebrew PCBs

On 15. 09. 2014 20:43, DJ Delorie dj@... [Homebrew_PCBs] wrote:
> I have a box each of 13, 26, 35, and 43 mil (I think those are the right
> numbers) carbide PCB drills.  That plus a set of standard twist-drills
> in letter/number/fraction sizes for weird holes.
>
> The 13s are for vias (28 gauge brass wire is perfect for hand-soldering
> these)
>
> The 26s are for small parts (1/4w resistors, through-hole ICs, etc)
>
> The 35s are for larger parts and sockets
>
> The 43s are for soldering wires to the board (22ga etc).
>
> As for drilling, I use a dremel on a custom stand for small boards:
>    http://www.delorie.com/pcb/dremel-stand/
> or my CNC machine for big ones:
>    http://www.delorie.com/photos/cnc/
>
>
> ------------------------------------
> Posted by: DJ Delorie <dj@...>
> -------------------------------
That's nice stand, but by design they have side motion too. The tool 
doesn't go straight down but in radius (12") of a circle. But of course 
that's 100% beter than a dremel in hand. This kind of drills (at least 
chinese copy) come badly balanced some time. that's a reaon why you have 
vibrations...

Slavko.