Expandable Stackable Drawer Cabinet

I searched quite extensively for a laset cut drawer based storage cabinet. I wanted to use it primarily to store my knives and I wanted it expandable as and when needed. Non of the drawer cabinets I could find anywhere checked all my requirements.
I wanted it to be bigger than 350mm to store bowies. I wanted it to stack, I wanted the stacks to be able to go on as and when needed.

So I created this. It is a multi part stackable cabinet, The base is also the top up side down when you decided you have stacked enough sections. Each section is a complete unit that fits on top of the previous section or the base. NB NB NB Each part of the cut out is on different layers in the file!!!!!

I am at 4 currently, no glue is needed to put it together. Should stack as high as you want as the full structure lies on top of the previous structure will keep on going till I find a limitation, but am sure it will definitely do 8-10 sections

I created mine out of 3mm MDF

Space is 390mm by 290mm and go