Bisaillon. Futon. October 14th , 2017.
Buying a futon bed is a great choice. A futon bed can be used during the day as a sofa and makes a great bed for sleeping on. However, before buying you should know what futon bed mattress qualities to look for. It isnt the frame of a futon bed than provides the comfort; its the futon bed mattress. If you havent yet bought your futon bed you should be aware that futon beds come in two forms; bi-fold and tri-fold.
Early designs involved a steel tooth design that would fit into pocket welds on the arms. These would snap off over use. The alternative design was to run a bolt through the arms and into the rails. While better it still did not address the issue of bending stretcher rails. Bent hinges also added another issue that would happen from use over time. While not as common as the other problems this issue still led to the failure of many black metal frames.
It was soon discovered though that these frames were not such a bargain that they appeared to be. The first problem with black metal frames is the round metal bars that make up the seat and back sections of these frames. Where as wood futon frames are using flat slats, black metal frames have hollow round bars. Thinner mattresses would slide through the gaps between the round bars. On wood futons this was never a problem.
However, the rigidity is quite low. A futon mattress made from a mixture of cotton and foam is much lighter and less firm than that of one made from 100% cotton. The rigidity of a cotton and foam futon mattress is quite high, so is ideal for futons that are going to be used mainly as a sofa. A futon mattress made from cotton and polyester is also light and not too firm. Its rigidity is less than that of 100% cotton or cotton and foam mattress.
The other issue with the hollow bars is that if enough weight was placed on a spot they would begin to bend. The issue became so bad that a 90 day warranty was put in place by most manufacturers of these frames. Another issue the black metal frames suffered from were bending stretcher bars or rails. Again the hollow nature of these strecther rails presented issues with breakage and bending.
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