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It depends. If the width of the razor (from spine to edge) varies proportionally to the spine thickness, then nothing. The formula stays the same.

If the razor width remains the same but the...

I hope this doesn't come across sarcastic - I'm just trying to answer the questions. :)

x = spine width
y = distance from spine/hone contact point to tip of bevel with no tape on spine
n = number of tape layers
t = thickness of tape
Θ = total bevel angle °


total bevel angle:
...

Robin, what type of tape are you using for these calculations? On the spreadsheet it shows that the thickness of the tape is just under a third of a centimeter, and that's some ultra thick tape. ...

I can get on board with that - the measurement would be easier. So:

Let:

x = spine width
y= distance from spine/hone contact point to tip of bevel
n = number of tape layers
t = thickness...

why not make it simple?

Let:

x = spine width
w= width of razor
n = number of tape layers
t = thickness of tape
Θ = total bevel angle °