One cannot use the same dishes and cutlery for eating meat and milk.
If one has 2 identical sets of dishes, then the custom is to mark the Milky dishes (with permanent ink, a scratch or otherwise) in order to tell them apart.
Source: Kitzur Shulchan Aruch 46:8
Tuesday, 15 Sivan 5776
Tuesday, June 21, 2016
נוֹהֲגִין לִרְשׂם אֶת הַסַּכִּין הַמְיֻחָד לְמַאַכְלֵי חָלָב, וְכֵן כָּל כְּלֵי חָלָב שֶׁלֹּא יָבֹאוּ לִידֵי חִלּוּף
Posted by Danny Schoemann at Tuesday, June 21, 2016