I have heard of using burlap instead of an inner cover. At $.30 compared to
$6.50 for wood it is certainly cheaper. Of course a wooden one could be
substituted for drip-feeding or with an escape if those methods are used, but
are there any other advantages/disadvantages to using burlap?
 
In a message dated 97-06-30 00:28:48 EDT, you write:
 
<< A number of  commercial lids or inner-covers I have seen in use have a
3/8"
 - 1/2" rim on the underside.  Can't say why -- the top-bee-space (the
 "standard" in North America) then ends up way too large, and the bees can
 plug that all up with burr comb, = pain-in-in-the-neck. >>