The backrest could be as simple as a wooden door.
Turn a twin mattress into a couch.
They are called stackable.
Straighten it all the way around and begin sewing up the slit.
They can be split and put side by side to transform into a king bed or joined together in a shape of an l to function as a couch or sofa.
Either leave the headboard and foot as is or cut it down.
Slip cover over mattress turn the finished cover right side out and slide it onto the mattress.
The bed should not have a headboard or footboard the side of the bed should be against one wall and the foot or head of the bed against another.
If you have two twin beds situate them in an l configuration in a corner of your room.
If you made it nice and snug this may take two people.
The walls will support the pillows and keep them from sliding off.
Visually this turns the bed sideways and into a daybed.
I love that it is as deep as a twin bed and man have i made use of it in her first year of life.
Place a comforter in a solid color or pattern on top of the mattress and tuck all corners and sides.
And either paint or stain.
You can prevent this by screwing two large eye screws into the wall studs near the base of the bed and then attaching a piece of twine or rope to the bed frame and tying it snugly to secure it.
A standard door is 80 inches tall which when placed on its side is only 5 inches wider than the 75 inch twin sized bed.
For elliot s room i found this amazing vintage bamboo twin bed although i bought it online and i thought it was a daybed.
Looks like you basically have the materials you need other than a back that is if you are on a budget.
You could easily place an old door behind the bed to create a low visual backrest.
But i still wanted the look of it to be a daybed sofa instead of a twin bed during the day.
Lower the mattress to knee height.
A backboard can help your twin bed look and function like a sofa.
That means you ll need to shorten the seat length by around 17 inches using very large backrest cushions.
There are bed frames designed specifically for people who want to make a couch from a twin mattress.
This means one bed frame is put on another one just like lego units.
Use either boards or plyboard cut for the back of the soft.