Just thought I'd show what i learned using cinder blocks for hive stands.
Back in spring when bees were swarming , I made stands in a rush with cinder blocks ( not thinking).
Today i had to axe a Queen an do a newspaper combine. Late in the year but have fingers crossed.
If you'll notice how i set cinder blocks on 2nd box from the left , thats newspaper combine.
The box i picked up for combine had blocks laying same way, after setting box over
I looked in blocks and seen the biggest blackwidow spider I've ever seen (didn't get pic) body nickel size , so just thought I'd share what can happen stacking blocks that way.