tycz,
Now that's what I'm talking about, a reasonable price for the coated boards.
Looks like a damn good supplier of bits, shame they are over in Perth, would be worth a visit.
Roger on all the tips.
I was making double sided s100 boards in the past, and registration of top to bottom is crucial on that sort of size.
As for clamping, the best bet is two sheets of glass either side of the DS sandwich, clamped with bulldog clips.
You can then easily flip over for the opposite side exposure.
Best paper for direct exposure back in the 80's was teleprinter paper - real thin, used along with a carbon sheet and a dot matrix printer very good results could be had.
This was still via a negative acting 3M scotchcal product.
Hmmm the old plotter / drafting mylar. Is that any good in an inkjet.....
I prefer the FR4 fibreglass, it is simply just more robust and I really prefer the appearance, all personal taste of course