In a recent article, we quoted Rabbi Y.Y. Fischer using “Kettle Logic“, attempting to both claim the Luchos may, indeed, have been rounded, and that our custom to round the Luchos is to avoid copying the originals… (I like the latter part.)
A contributing author, Rabbi Reuven Chaim Klein, just brought to my attention an article he once wrote on this topic, uncannily similar to my own: Squared vs. Rounded Tablets.
It’s interesting to note Rabbi Shach’s final position was pro-square Luchos, though “Michtavim Uma’amrim”, the collection of Rabbi Shach’s letters and speeches somehow missed that letter.
Again, find it here.