Donald and Ulf, Hi mates,
and I am pleased to let you know that parrafilm is not the masking material for all situations and to not toss it away thinking it has no use, quite the contrary.
It has unique qualities that will work only /mostly on surfaces that are smooth and non porous , (meaning), that matt surfaces are more difficult to get that 'adhesion' aspect of the film to work best. :-/
The 'secret' to having it work at it's very best is in the way and the amount if 'stretching' it has to have done to it before it is applied to the surface needing protection.
I did have a video on Youtube, showing the technique I use for masking clear canopies, which by the way, was where it was discovered to have it's best adhesion qualities by a guy who worked in a medical lab where it was used to seal the joins of the glass tubes to prevent the leaking of fluids.
He was a lab techie and took some home with him to experiment with it on his models after seeing how it wants to 'cling' to ultra smooth surfaces and not leave any marks or residue behind after it is removed'
And after he had submitted an article on how to use it in Finescale Modellers Magazine, the American Can Co's sale of the stuff to modellers was astounding, as it works so well.
Now, my huge roll of the stuff is coming to an end, but I have had the same roll for over 10 years now, and a good 70% of what I have used has been the excess from the trim off and the experiments with it to see how and what other applications I could use it for.
Like decals over matt surfaces, the adhesion qualities are not it's strength, but like I said, a surface that is like glass, including gloss painted, is what is required and preferred for it to 'work'.
It will take you many years to use the whole roll if it is a big one, so you have a lot to 'play' with, doing experiments with it and 'making' it work for you.
I love it and swear by it, and as it is such a 'soft' masking material, it will release from the work area with just a wooden tooth pick used to break the 'seal' and begin the removal process, usually by 'winding' it onto the tooth pick and the film simply comes away with very little effort.
I will make a new video and make it one that is more descriptive and visually rewarding on just how good and easy it can be to have it around.
I hope that what I have written here has been of some help mate.
13. April 2016, 06:09