Homebrew PCBs

Leon Heller wrote:
> I use sodium hydroxide solution to develop Fotoboard 2 (12 gm/litre).

Just tried the CPD5 at half-strength. Works like a charm!
Takes about two minutes to develop if it's mixed with cold tap water, 
but at least that's better than it taking ten seconds and stripping the 
resist before you can rinse off the developer.

It seems the main problem is that my laser printer isn't producing a 
dark enough black on the LaserStar film. Instead, the toner is patching 
and spotting, which is producing matching dots and marks on the board 
(even when it's underexposed by a few stops). Naturally the printer 
doesn't offer any adjustments for toner density, or an option to turn 
the halftoning off... (bloody Kyocera and their completely undocumented 
point-and-drool printer driver). Much as I hate to admit it, I'm 
actually starting to miss my clunky, noisy, unreliable Panasonic B&W 
laser... it had a density setting that went from "almost no toner at 
all" to "dump almost the entire cartridge on the page."

Back to the Canon inkjet and JetStar Premium film, I reckon. Looks like 
I've got an iron-clad reason to give She Who Must Be Obeyed next time 
I'm told to get rid of it :)


Anyone want a couple of packs of LaserStar film? I've got two packs of 
ten A4 sheets sealed new, plus one with about half a dozen A4 sheets 
left... The sealed packs are both from Rapid; the opened one came from 
Farnell.

Cheers,
-- 
Phil.
ygroups@...
http://www.philpem.me.uk/