Vinyl across top of windshield

[x2chris7x]

I've read some posts on here about adding an upward curve to vinyl that will be placed on a windshield, so when installed it appears to be straight instead of curving down... Have a car with a strip of vinyl across the windshield that curves down, and customer wants it to be straight.

Right now the vinyl comes down the window 7.125" in center, and 10" at edges. Difference of 2.875". Would I just created the opposite curve for it to appear straight, or is there some other formula that I need to use?

 

[d fleming]

Red is windshield. Straight line between a & b, c is measurement from straight line between a&b to top of windshield. This is your bow. Make a rectangle the length of a&b that your text will fit in. Do a horizontal bow the distance of "c".

 

[Billct2]

We usually do a paper print to double check