To stop a futon frame from squeaking, you can tackle it by doing the following:
Identify the location of the squeak - just like a doctor needs to know what is wrong so to find a cure, you have to know where the squeak is coming from - and target that area.
It is possible that the screws are no longer tight fitting so a layer of plumber’s sealing tape should be applied to all of them. It is not that thick and will also provide a form of lubrication in the screw hole.
Replace the screws - It is likely that the screws have stretched and no longer hold the parts as tightly as they should. Add a 1/16 inch thick washer before replacing the screws.
Use candles - do not light them up. You'll be needing the wax. Look for parts that have been rubbing together and rub the wax candle over them. This will make a lubricating surface and will prevent future squeaks
Re-assemble - make sure every screw is tight to the maximum extent
The Mattress - coiled spring and a woven metal mesh can give rise to smaller squeaks which will be noticeable. You can use a cotton bud with a drop of light machine oil and apply it at the mounting points of each spring.
Furniture has an impact to your health, comfort and efficiency. This can make buying furniture a bit challenging. After all, you want to buy furniture that fits, supports and enhances the way you live. Make sure you read About.com Furniture to know more on buying quality furniture.
Furniture Shopping Tips: Check out The Best Secrets For Furnishing A Home On A Budget, From Real People, featured at Huffington Post.