Homemade Pet Rat Cage

This is a rat cage made by my dad. I designed it for the most part. This is mostly just to show other rat fans the cage and to share ideas about homemade rat cages.

The cage was made using a lot of expensive tools which my dad already had as he is a woodworker. If you're interested in making one like this, let me know and I'll actually figure out what he used hehe.

The pros of this cage:
~Tall and takes up little space
~Lots of levels and climbing for the rats
~Wire allows good ventilation
~Light weight
~Plastic-like material used (which can be removed and replaced) that can be cleaned with ease
~Holes for pegs drilled at different levels for shelf adjustment
~Very strong wire that is difficult for rats to chew (the girls are chewers and haven't been able to chew it yet!)

The cons of this cage:
~Not enough different doors
~Door opens and all levels are open, making it easy for rats to escape on any level
~Door can shut on rats heads, feet, tails, ect. easilly (requires extra attention)
~Bedding and messes can fall through the wires onto the floor (can happen with most cages anyway)
~Hard to clean on certain levels when standing at certain height (have to bend to clean it)
~Bottom shelf is hard to clean from the corners and underneath where the wire touches the bottom
~Possible for rats to chew wood (wire is inside to prevent this)