"Unisaw A100" wrote in message
...
Leon wrote:
2. Does it seem that a flush fit would be harder and require greater
expertise than having a lip?


The very reason I commented with the comment I commented
with, the added cost of labor to sand the two surfaces flush
with each other and not sand through the veneer on the
cabinet bottom, i.e., experienced workman.


HOW? You clamp a piece of ply to the base on the inside, then snug your FF
up against it. Nothing could be simpler. Certainly easier than trying to
get a consistent lip without another reference.