Add punctuation: The abrasive grain must be supported vertically to obtain the desired chip size
A: The abrasive grain must be supported vertically to obtain the desired chip size.

Add punctuation: 1439 And again he went away and prayed and spake the same words
A: 14:39 And again he went away, and prayed, and spake the same words.

Add punctuation: As such if you can read this post the nameserver changes has NOT kicked in but should be doing so within the next 1224 hours or so
A:
As such, if you can read this post .. the nameserver changes has NOT kicked in, but should be doing so within the next 12-24 hours (or so).