You can use the Oracal 651 on windows. I have before. But it is only a cut vinyl. And it will shrink up and leave an adhesive outline around the letters which collect dirt. Not really a problem for short term application.
Question: why are you wanting a "thick" vinyl for vehicle window decals? What advantage do you see in this?
That has more to do with the cheap vinyl than it does the thickness. Are you laminating these prints, with clearshield or film either one? If not, don't plan to put your cutline next or in the ink. For a window lettering, regular ol 3651 gets the job done for me most of the time unless I know it needs to be more permanent.
That has more to do with the cheap vinyl than it does the thickness. Are you laminating these prints, with clearshield or film either one? If not, don't plan to put your cutline next or in the ink. For a window lettering, regular ol 3651 gets the job done for me most of the time unless I know it needs to be more permanent.