When I was making it I wasn't sure if people would go for it or think I was a freak, but it turned out to be great. The weight limit is 600 pounds if done properly, so you have about 500 people pounds after the mattress and wood weight. This is enough for almost any couple to safely sleep and with proper safety should never fail sans advanced warning.
This bed is also adjustable. I can make X's with the cable to raise it around 5.5 feet above the floor. Also, making the wire loops "longer" lowers the bed. Please buy plenty of cable so you too can adjust your bed to the right height. I am just short of 6 feet and I can crawl up just fine, but most need a stool or chair, keep this in mind along with the added risk of having a bed 4 feet off the ground.
There are a few requirements for your dwelling you need to make this happen. I would hate for you to start chopping up your place to find no trusses to hang from. Before you begin you should know you will probably only be able to do this is you live in a house (duplex, town home ect) and NOT an apartment. From my experience of building homes and living in apartments those of you will be out of luck :-(
I recently finished this instructable as it was only half completed for a long time; reason I believe for low rating (IMO)
If you like this please rate 5 stars*****