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How did this idea of placing the mattress 1 inch below the top of 2x6 work overall? Worked in the long run?Was 1 inch good enough or you would rather make it 2-3 inches below? Having the mattress "framed" by the sides looks to me better than just placing the mattress right on the top of the frame.
I will try to make one in the following weeks. I am just thinking of putting the mattress (Brooklyn Bedding, Full XL, 54x80x10) 2-3 inches below the top of the sides 2x12. So the mattress is being framed, so to speak. I guess having the mattress right on the top of the frame makes the mattress susceptible to moving off the frame edges. Whereas having the mattress "framed" makes the entire bed more stable.