I put your images on imgur, that sendspace tried to download some exe to me the first time, dodgy as..
what weight of tracing paper are you using? It looks almost like it's crinkling or non-uniformity in the paper coming through. The heaver weight, the more "stable", I use 110gsm (but I also use Dry Film resist, not pre-coated boards).
Also how are you clamping the artwork to the board, and what sort of light-source are you using.
On Fri, Aug 29, 2014 at 11:53 PM, Leon Heller leon355@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
On 29/08/2014 12:49, mattmoose1969@... [Homebrew_PCBs] wrote:It might not have enough contrast, try using LaserStar film. I think
> Hi Leon,
>
> I'm laser printing the artwork onto 90gsm tracing paper, as recommended
> by someone who has done a lot more of this than I have.
it's available from RS, or you can get it from Mega Electronics (UK).
Leon
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Leon Heller
G1HSM