Cut-Off Bar Crowning/Angling

[Ron Nossaman]

>One may choose to modify the perimeter of a soundboard rim system (rim, 
>belly rail, etc.) by adding or modifying a cut-off bar. However, unlike 
>other soundboard terminations, the soundboard usually extends beyond the 
>cut-off bar to the forward bass corner of the case for appearance sake (I 
>suppose we could put a little flower arrangement in there or something!). It 
>is generally recognized that an important feature of a soundboard 
>termination is to have your nice 1-1/2 or 2 degree angle on the rim system. 
>So I assume you want such an angle on the cut-off bar. But if you make a 
>linear.flat cut-off bar with a small angle on its top, then the soundboard 
>will have to bend into a reverse crown at the cut-off bar. Seems to me the 
>cut-off bar needs to be angled and crowned to match the shape and 
>orientation of the soundboard contact area.
>
>Is this good thinking, or am I losing sleep over nothing?
>
>Terry Farrell

Flat. Works fine.  

Ron N