I don't, but I will give you a piece of advice. Get some support under that hive.When 2 boxes are propolized together, you are going to pull the front or rear of the hive 2 inches, trying to remove the super, and the hive is going to the ground.I would place 2 boards parallel to the runners on the bottom board, so the hive has room to slide without falling.
You beat me to it Iddee, was also going to say while the stand looks good, looks to be made out of 1" angle iron which is kind of flimsy considering you will have a couple hundred pounds in just one hive, let alone several on the same stand. They get heavy before you really know it. Would hate to see those nice hives on the ground.