Homebrew PCBs

samIam wrote:

> 
>>Rather than drilling all the holes twice, couldn't you just drill a 
>>couple for alignment and the drill the rest after the boards have
>>been glued together?
> 
> 
> Ill try both methods and see which one produces the better result.
> 
> Its certainly not an issue of 
> drill
> drill bits
> copper laminate
> toner transfer
> laser printer
> 
> All of which I have or have in abundance. Time? no, I am currently
> surviving on 6 hours of sleep a day. ;)
> 
> 
> 

   Iron side 1.  Drill two holes in opposite corners, put some for alignment if 
you don't already have holes near the corners.  Punch same holes in side 2 with 
drill bits.  Use two bits in holes to get in alignment and start ironing.  Take 
out bits and finish ironing.  Etch etc.

   Unless your board is more than 8 inches, keep the longest axis across the 
page.  More distortion in the paper pulling direction than the scanning 
direction on most printers.

   Works fairly well.

   Surface mounting everything and doing 1 side is about ten times easier 
though.  I haven't had a DIP fail yet because I didn't drill 14 or 40 holes and 
make the leads go through the board.

Alan