There's no need for that, what do you plan to accomplish other than
getting your message ignored? Jason is trying to help you out and I've
replied to your e-mail request with a feasible solution.
Best Regards,
Jorge
I don't think it was aimed at me - unless he thinks I'm an Eagle developer.
In any case, it's not very nice, and I'm very disinclined to offer any more assistance in this area (and if I was an Eagle developer, then I would certainly feel that lowering the priority of this feature is justified).
I know how I'd invert the image, but if the reason why the scaling is wrong is in the latter stages of output (i.e printing), then I know it won't work so there's no point in suggesting it.
Is it a photographic process (i.e. you need to provide it with a negative)? If so, how are you producing the photographic material? Is it printed out somehow?
(I'm just trying to gauge why you're having problems with scaling, and where those problems can lie).
Is there any particular reason why you need to invert the PCB image? And how are you producing the mask from the file?
If you're using a printer driver, then you need to make sure that this isn't scaling the output (such as having a "fit to page" option selected).
I regularly use the PDF export option, and import it into a program which does PDF reading, annotate it with my name, design name, logo and so forth, and then print it using a normal inkjet printer. But then I spent a lot of time making sure that the scaling wasn't a factor (however, I've never needed to invert the image)
