Vallee Futon October 22nd, 2017 - 13:23:19
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.
Natural fibers, cotton and linen are nice and soft to begin with, but can wear faster than synthetics. Synthetic fibers; polyester, nylon, rayon and such; might not be quite as soft but they last longer than natural fibers. Synthetic fibers have come a long way, they are constantly being improved and they hold vivid dyes that cotton and linen cant. A good compromise between Natural and Synthetic fibers is blends of the two, which are in abundance in the futon cover market.
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.
When I first got into the Futon business about six years ago, I was under the impression, as a lot of folks are, that futons werent nice enough for anywhere other than college dorms and first apartments. Well, things have certainly changed. This is not to say that those unfinished tri-fold frames with thin all cotton futon mattresses dont exist anymore, they do, but there are also some very nice frames, mattresses, and futon covers in todays market.