Stop in for a cup of coffee

Looks good.,... But I don't get it. I understand drilling and filling the ends so original crack doesn't continue. But, how does the full row of plugs help?

Seems to me the crack is still there.....am I missing something?

you put those in, weld the crack between them and over them, thus filling the crack, then sand smooth. The idea behind it is IF the crack were to re-crack, it would stop at the plug. Its the same reason they put cuts into concrete. And it will work just fine.