On foundation holes:
 
When I bought foundation in the past, I always used to punch out the corners.
 In looking through my stock of drawn comb, I find the bees always fill in
the corners.  Conclusion:  The bees find the passages under the frames to be
sufficient.  The Pierco 1-piece frames+ foundation I now use don't have
holes.
 
W. G. Miller
Gaithersburg, MD