[LakelandARC] ExpressPCB

[Don Jeerings]

On 09/15/2015 10:43 AM, gwmann gwmann at verizon.net [LakelandARC] wrote:
> Have an idea? Get boards made...
> de George KJ4UW
>
> http://www.expresspcb.com/
>
>
>
>
> Sent from my Verizon Wireless 4G LTE smartphone
> 
George.. If they are single sided, we make our own, I conducted a class 
for doing this at that at one of our club meetings.


If it's double sided, or we need quantity, It's best to use Express PCB. 
I have a running account with them and have had over 60 boards made by 
them over the past 3 years.


But for small quantities or experimental, the Express soft-ware is 
excellent for home making small quantity single sided units, keep in 
mind you have to reverse the top and bottom images (because you are 
making copies of a positive (not negative) image. We use a conventional 
laser printer and then heat transfer the Toner image to a copper board, 
then etch and drill it. (drills are available at Harbor Freight.


We use a peroxide/Hcl mixture in place of ferric chloride. It's much 
better, but little bit of training is required to safely it, i.e. Wear 
glasses and Never pour water into acid...


If you already have an approved design, and need to make a quantity, 
Express is the best route, but remember that it's very costly if you 
make a mistake in your artwork, like specifying too small a hole. With 
through hole plating, you Cannot Drill later drill the hold larger. and 
you could have invested in a dozen useless boards.


If you are designing a new circuit,  it's best to make the prototype at 
home. After its been checked operational, then go to Express for quantity.


What did you have in mind, did you have some other applications ?


Don  KI4EFL








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