So fitting you learned everything from Nintendo, that your handle begins with toad. LOL
Anyways I have no problem answering questions but as usual need more info. Since I have little to know knowledge of Blue tongue Skinks, you will have to remind me of the temp requirements and humidity. So that I may better recommend a cage.
However, you have simplified the fact that you at least know the size you want. You just need to determine what it is you want it to look like.
Melamine is probally the cheaest and easiest to work with. It is readily available, true flat, and cheap for an already finished product. In high humidity cases it can easily be lined with a protective layer of vinyl or similar product. The precut shelf pieces make easy work of assembling a cage as you don't need to cut as much.
I build nearly all my cages in the same fashion melamine carcass and stained wood fronts. It gives me the durability I need as well as the look I want. Not to mention that melamine holds heat well when compared to plastic enclosures. The same relative box design can be adjusted to meet the inhabitants needs and with a stained front the owner can look at cages that don't have the same sterile look of a plain white box.
Joints can go from simple butts to complex Dado cuts and rabbeted back panels. it is all based on the users ability and need.
Melamine may not be the look for you, it might be. An enclosure made out of Oak that looks more like a piece of furniture may be more you style. Only you can tell or know what every it is you want there are enough help her to get you the answers you need.
It may also be helpful to know what tools you have available, or it may be necessary for you to find someone to cut the wood for you.
Budget is another key factor in cage design.
Good Luck and let us know.
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Jeremy
"I am become death, the destroyer of worlds" July 16, 1945 Robert Oppenheimer
1.1 Double Het "Sharp" Snow RTB's
1.1 Hypomelenistic RTB's
0.2 Pastel Hypo RTB's
2.0 Double Het Stripe Albino RTB's
0.1 Suriname RTB
0.1 Anerthrystic RTB
0.0.11 Red Bearded Dragons
1.1 Rhinoceros Iguana's
1.0 Green Iguana
1.0 Ball Python
1.1 Cream Golden Retrieviers
1.0 Pomeriaian
0.3 Catus Terribilis
0.1 Spouse
0.0.1 Youth -coming soon-