Largest Complete Scrabble Block

Question

Let's define a Complete Scrabble Block as an arrangement of Scrabble tiles such that:

1. The four edges are all flat.
2. All words are words.
3. There is an order in which the tiles can be played in a game of Scrabble to reach the result.

For example:

CAB   CAB   CAB   CAB   CAB
        E   O E   O E   ODE
        T   P T   POT   POT

What is the largest Complete Scrabble Block that can be created? Provide an example final grid and an order of play:

CAB   111
ODE   352
POT   342

Notes:
- You don't need to stick to the Scrabble tile counts if you don't want to (though it would be cool if you did).
- You don't need to stick to the Scrabble dictionary if you don't want to (though it would be cool if you did).
- The intermediary steps do not need to be flat-edged.
- The final solution need not be a square.
- I don't know the answer, so if nobody can definitively prove correctness in their answer after a week, I'll accept the answer that provides the largest area (w*h). In the event of a tie, I'll choose the answer based on Scrabble score. In the event that this is still a tie, I'll choose the one that was put up first.

Answer 1

Here's what I would consider a "fuzzy" answer, since some of the words used in it have questionably acceptable definitions. Nevertheless, I think it's a good example, and I've included links to prove that each word has at least one source that claims it is acceptable.

Wikipedia has several examples on its word square page. Here is an 8x8 example:

L A T E R A L S
A X O N E M A L
T O E P L A T E
E N P L A N E D
R E L A N D E D
A M A N D I N E
L A T E E N E R
S L E D D E R S

Unfortunately Wikipedia doesn't give steps for actually playing this out in Scrabble, so I did that myself. Note that this is not possible in Scrabble with the number of available tiles, and many of the words are not in the official Scrabble dictionary. Anyway, here are the steps, with a special thanks to Gordon K for the formatting idea:

And here are the justifications for why these are all words:

1. Laterals: In the Scrabble dictionary.
2. Ditto.
3. Sledders: In the Scrabble dictionary.
4. Ditto.
5. Axonemal, Ax, To, En, Re, Am, La: All in the Scrabble dictionary.
6. Ditto.
7. Amandine: In the Scrabble dictionary.
8. Ditto.
9. Lateener, Ate: Both in the Scrabble dictionary.
Ned: Scottish derogatory term for hooligans. (source: Wikipedia)
Ded: British term for a Russian soldier who has served two or three years. (Source: dictionary.com)
Ner: Informal interjection, taken from "neener". (Source: Wiktionary)
10. Ditto.
11. Enplaned: In the Scrabble dictionary.
12. Ditto.
13. Relanded, Plate: In the Scrabble dictionary.
Anded: Past tense of "and". (Source: yourdictionary.com). I really, really don't like that definition or website, but I use the term all the time when referring to digital logic functions. (In those cases it may be more appropriately written ANDed, and thus this word gives me the most hesitation with this answer.)
14. Toeplate: In the Scrabble dictionary.

Answer 2

How about this one (taken from here) which is also a word square:

Answer 3

Here's a start (taken from this page) . I'm sure someone can expand on it or find something larger.

G L A S S E S 1 A 3 7 6 8 5
R E L A P S E 1 A 3 7 6 8 5
I M I T A T E 1 2 2 2 2 2 2
S M E A R E D 1 A 3 9 6 8 5
T A N N E R Y 1 4 3 4 4 4 4

A is used instead of the number 10, to keep things to a single digit.

** It wasn't clear from the question whether all of the words had to be acceptable Scrabble™ words, but I should note that SATAN is not in the official Scrabble™ Dictionary, and thus this answer might be invalidated (unless someone can some up with a clever way of modifying it to remove the offending word.