Homebrew PCBs

Hi Robert,

I read yourpost about doing a minor production run of 100 8.5" x 11" 
pcbs.

There are definitely scaling up problems. Here are a few for your 
considerations:

Environmental --- disposal of the hazardous wastes produced.
                  disposal of the copper contanminated water.

Manufacturing -- sq footage needed to produce the pcbs
                 Manually drilling 500 holes per pcb, means 50,000 
holes! If you have never done this. be prepared. I would seriously 
consider a CNC driller.

Time -- it still takes time to take each board through the steps. 
Are you plannng on component markings or solder masks. Don't forget 
cutting and testing the boards.

All of these are acheivable for the home brewer. Any of the 
techeniques can be made to work, and work well for single pcbs and 
very small runs. But at those volumes the logical way is to send it 
to a board house and let them do it. The overall quality and 
appearance of the pcb will be much better.

I'm not saying don't try it. Home brewing pcbs is a lot a fun and a 
challenge, and there is a sense of pride in seeing the final result, 
but look at the bigger picture and decide for yourself.

Good Luck,

Myc