Has Les Saidel Rediscovered the Shape and Recipe for the Lechem Hapanim?

(3) The two sets of showbread are fundamental necessities for each other. [Similarly,] the two dishes [of frankincense] are fundamental necessities for each other and the sets and the dishes are necessities for each other. The [golden] table should not be dedicated except by placing the showbread on it on the Sabbath.
From one Sabbath to another, the bread that was placed on the table on the previous Sabbath is removed and new bread is arranged there. The bread that is removed is the bread that is divided between the two watches - that which enters and that which departs - and the High Priest and they partake of it.

These are the officials who served in specific positions in the Temple: ...The house of Garmu was responsible for the preparation of the shewbread;

Ten wonders were wrought for our ancestors in the Temple: ... [7] no defect was found in the omer, or in the two loaves, or in the showbread;

And for this matter they are mentioned favorably: Never was refined bread of fine flour found in the hands of their descendants, so that people would not say that they are sustained from that technique of preparing the shewbread. They ate only bread made of coarse flour mixed with bran, to fulfill that which is stated: “And you shall be clear before the Lord and before Israel”. Not only must one’s behavior be beyond reproach, he should also make certain to be beyond suspicion.

The Sages said to them: What did you see that led you not to teach others this craft? They said: The members of our father’s house knew that this house, the Temple, is destined to be destroyed, and they were concerned lest an unworthy man learn our skill of baking and go and engage in idol worship with that skill. Therefore, they attempted to prevent this skill from spreading beyond their family.

(2) All the meal-offerings that come as matza are to be kneaded with lukewarm water so that the dough will bake well, as only a small amount of oil is added. And one must watch over them to ensure that they do not become leaven

(1) All the meal offerings come to be offered as matza, with care taken to prevent leavening, except for ten loaves of leavened bread among the forty loaves that accompany the thanks offering, and the meal offering of the two loaves that are brought on the festival of Shavuot, as they come to be offered as leavened bread.

(4) ...With regard to the loaves of shewbread, their length is ten handbreadths, their width is five handbreadths, and each loaf’s hornlike protrusions is seven fingerbreadths high.

(5) As for the Table, its length is ten handbreadths and its width is five handbreadths, as the Torah states that the Table is two cubits long and one cubit wide (see Exodus 25:23), and Rabbi Yehuda holds that the cubit used as the unit of measurement for the construction of the Temple vessels was equal to five handbreadths. With regard to the shewbread, its length is ten handbreadths and its width is five handbreadths. The priest places the length of the two shewbread arrangements across the width of the Table, which leaves five handbreadths of each loaf protruding from the Table. And he folds the protruding two and a half handbreadths upward on this side of the Table, and the protruding two and a half handbreadths upward on that side of the Table. One finds, therefore, that the length of the shewbread covers the width of the Table. Similarly, since the width of each loaf is five handbreadths, the width of the two loaves filled the entire length of the Table. This is the statement of Rabbi Yehuda. Rabbi Meir says: With regard to the Table, its length is twelve handbreadths and its width is six handbreadths, as the measure of a cubit used in the construction of the Temple vessels was equal to six handbreadths....

A Cog Ship

What Less Seidel thinks Rashi imagined