I made mine 
Apart from keeping bees in I tell people it’s an old fashioned way of collecting swarms. Unhygienic though and I would recommend using a new cardboard box every time, transfer to a new hive then quarantine away from your apiary till you can ascertain its disease status. Last year there was an outbreak of EFB within the range of getting an SBI visit, I dread to think what might have happened had a swarm come from that area and got hived straight into my own apiary. I have access to an out apiary for that very reason.
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