I was removing the20 plus year old tint off my bug. I was using one off those straight razorblabes with the holder . The flatlooking one you slide in and out with your thumb. It kept popping loose and sliding in so i took the straight razor blade out and put one of the boxcutter type,angled on both ends. The angles held it in place and locked down on it self. I could put all my pressure behind it and it never slipped in the holder. I did 4 windows in the time it took me to do the back window. ( i also kept it wet with cleaner) But the holder really helped. Hope this helps if anybody has that nightmare job of removing tint, it made it really easy.

 

I used a steam cleaner I bought at walmart for 50 bucks, then returned. Took me all of an hour to do an entire car.

 

yep, i've had to take tint off of many a car, it's a pain. be especially careful of the back windows with rear defrost if you're using a razor blade! i use the razor blade to get it started and then pull as much off as possible by hand. then the worst part is getting all the glue off the best way i've found to do that is saturate the glue with a solvent (i've used Acrysol and if you're VERY careful you can use Thinner too) and then scrape it off with the blade. make sure you either wear a ventilator mask or have lots of air flow otherwise it's brain cell death, or straight up death. on the rear defrost sections, i've done the same saturation of solvent but instead of a razor blade, i've used #0000 steel wool, it takes the adhesive off but doesn't harm the defrost strips.

just a couple other tips i've learned over the years.

 

Acetone wont harm the defroster strips and works really good at removing glue, as does denatured alky.