Prelim report.... Well..... It works. I left the sheet for 12 hours or so, and the ink dried, but if I wiped my finger moderately firmly on the image, it smeared away. However, with a protective strip of draughting (paper masking) tape on the back of my steel rule, it was perfectly possible to cut out the parts using the image. Then, another little thought struck below the waterline.... I have a spray can of Gepe brand Inkjet Fixative Spray, I bought it from UK photo chain Jessops, but no doubt there are equivilant products elsewhere. A light spray over the image, 10 minutes to touch-dry and the image is completely un-smearable. No bleed while the fixative was wet, just clean crisp lines. I'll carry on cutting these first items out, then see if there is any inhibition from the fixative towards any adhesives or paints. No doubt it will be possible to abrade the fixative off the plastic once it has done its job, or possibly a solvent wipe will remove it; isopropanol, household ammonia, something like that maybe. I think I might be ordering a load more styrene sheet tomorrow.... Tim PS Anyone else interested in a PLASTIC card modelling forum? PPS Sorry Gil, I missed your entry above about the acrylic matt spray! DOH! Thats just what I have done! Great minds..... Anyway, it works!