Absolutely! Give this a try:

Draw a solid cone with a 7" radius and 1.5" height. Position it as shown. Be sure to use the alignment tool to position the base of the cone to the top surface of the guitar body.

Boolean Diff the cone from the guitar body.

Select only the single edge highlighted in yellow (2nd image). Fillet 0.2" Shape: Const Dist

Select the entire guitar body and Fillet 0.2" Shape: Const Dist

Ed Ferguson