DIY bed at home. Simple handmade bed (ENG sub)

Step-by-step instruction how to make handmade bed. You will need wooden bars with size 50 mm*50 mm, four wide boards for cladding and a furniture board for the headboard. The standard size of the mattress must be taken into account:
children's size
width from 60 cm to 80 cm (multiplicity +5), length 190-200 cm
single mattresses
width from 80 cm to 95 cm (multiplicity +5), length 190-200 cm
one-and-a-half-bed mattresses
width from 130 cm to 135 cm (multiplicity +5), length 190-200 cm
double mattresses
width from 140 cm to 170 cm (multiplicity +5), length 190-200 cm or width 180 cm, length 190-210 cm
It is also necessary to remember that when assembling a simple bed, the dimensions of the frame under the mattress should be larger than the mattress by at least 1 cm.