Start with the 3 pieces
-fashion end wood from maple
-glue padding to bottom piece
-install ends
-drill 3/8 hole for dowels (4 in all)
-remove and glue endwood
-glue dowels
After this process a 24 hr. drying period is required
-trim and sand excess dowel wood
-cut top and bottom radius with Router
-cut radius inside top lip
-cut valley for o-rings in slip joint
-sand ends and body of case
-mark centerline on case
-cut leather, first overall size and then cut top
section from that piece
-apply glue to leather and let dry for 24 hrs.
-apply second coat of glue and let stand for 15    
min.
-skin the bottom with the leather
-skin top
-let dry for 24 hrs.
-finish ends and inside top
-let dry for 24 hrs.
-glue slip-joint to bottom
-sew lining and glue in the case
-hand sand o-ring valley to tight fit and then    
install o-rings,which are floating.

-Install upholstery tacks on the bottom of the case.

and FINALLY...

-Sell case for less than it is worth!