How To Reinforce A Bed Frame. Use solid slats [just get 1×3 from lumber yard or home depot, et al], or buy a slat kit like this one. Comasach 16 inch king size bed frame supports up to 3500lbs no box spring needed platform with heavy sy metal steel.
With $12 dollars, and a trip to the hardware store, i show you in this video how i reinforced my slats on my new bedframe. Check all the slats and the other parts that make your bed frame to determine the positioning of the screws. Beds done this way are very solid and no noise.