Homebrew PCBs

On 19/02/2012 18:00, Harvey White wrote:

>
> I dislike jumpers, so the effort of making a separate layer is often
> worth the added step. Since my main techniques involve thin board
> epoxied together to make a dual sided board, I effectively make two
> boards to get one, but I can remake the "bad" one easily.
>
> Last run was 10 board sides, two stepper motor drivers, breakout board
> for a PCB drill, back panel for same, and a power distribution board.
> You pays your money.... etc.

I can usually design boards so that very few jumpers are required. With 
double-sided boards soldering all the links through the vias is worse 
than a few jumpers! :)

>  >As I've said several times, I get excellent positive transparencies with
>  >a cheap HP 9540 inkjet printer and JetStar Premium film.
>
> I'll have to try that, and see if JetStar Premium is available here.
> That's when I start in with the photoetch, of course.

Farnell stocks it, but only in the A3 size, for some strange reason. 
Since I cut it to size it doesn't matter. They stock the ordinary 
JetStar (I used to use that with a lower-res Epson inkjet) in A4. Mega 
Electronics will probably send you a sample sheet if you ask them 
nicely, they sent me one. Otherwise, I could post a piece to you.

Leon
-- 
Leon Heller
G1HSM