Quote:
My question is why do the plans suggest a run of 3″ and a rise of 1.5″
Because if you look at Rockler’s spec sheet, it clearly shows that mounting arrangement.
Also, the 1/8″ difference will not be any problem. If it is in your case, just trim the edge as needed.
Simple as that!
If you remain unsure, by a sample and adjust your bar top as needed. It’s usually not needed.
I NEVER trust the dimensions they claim. Always buy a sample first.