Originally Posted by
M0nk3y
You shouldn't need a plastic blade at all.
Allow the car to sit in the sun all day. It will heat the paint and allow an pretty easy removal.
Use a heat gun (hair dryer works surprisingly well too) and heat the film up a bit where you want to start removal. Slowly pull the film and keep on heating the upcoming space where you want to remove the film. If the film starts to overstretch and it is not pulling off easy because of the stretching...back off on the heat.
You'll most likely encounter glue built up on the very edges of the film. It is pretty hard to have the glue lift with the film here, so you'll probably have to remove that manually later. However, as you're pulling the film and you start encountering glue in the middle of the film, STOP. The film probably isn't hot enough, you're pulling too fast....etc. Slow the process down and take your time. If you remove it correctly, you should have no glue left over besides the edges of the film.
With the glue on the edges, removal can be done with clay bar...or something similar. We've used foam glass cleaner and it removes it fairly well. If you encounter issues here, we've used little acetone and it pulls the glue right off very easy. We used that as a last resort though.