I made a bedding compound of sawducst and tightbond. I didnt want hollow spots under the shell to help prevent chipping or out right breakage. Then after smooshing it down flat to form with the shell I took the shell off, and added superglue to the shell and smooshed it back.
The bedding was mostly dust with just enough glue to make it a paste. I put straight glue down first on the bow l, enough to give good adhesion of the bedding to the bow.