Where to start,A 3 b is usually made on 3 1/2" stock for the swell,while the wade is cut out of 4 to 5" stock.The wades of today have changed alot from the original.Most tree makers have thier own version.The tree maker I use has 4 different styles of Wade,Homestead,Wade 58,Hamley Wade,and a cliff wade.You will need to talk with the tree maker and find the one that works for you.
Steve