Ideal paper for the exposure of PCBs

I've tried this transparent paper for the exposure of PCBs (Photopositive FR4) and am thrilled. The ink coverage with my laser printer is very good and much better than having expensive overheads. The edge sharpness is awesome and the paper is the term dimensionally stable (unlike laser films).

I expose a UV device for gel nails (4x9 Watt; camp = 1638 & creative = 19454 & creativeASIN = B00MUBTMSS & Linkcode = as2 & tag = neighb-21 & LinkId = IK5W5WH5JCSPU7NP) 5 minutes (Bungard material) for perfectly sharp and disruptive results. Even large copper areas remain after etching with sodium (in a simple heated bowl) with no holes or corrosion condition.