When writing articles about the different ways to remove decals, we almost always deter people from using Metal razors blades to remove decals. Why do we take this stand?
Well using a Metal razor blade can:
1) Easily scratch painted surfaces (we never recommend them for removing decals on painted surfaces such as cars)
2) Be harmful for the user if slips (and cut themselves)
3) Dirt cheap
However, if you are trying to remove a decal or sticker from glass, then a metal razor is passable as its:
– hard to scratch the surface; and
– if you use a metal holder, its much safer and harder to hurt yourself
We would still recommend a plastic razor blade such as the Wonder Wheel as its almost impossible to hurt yourself and your wont damage the surface.
Good luck with your project and stay safe.