Direct quote 2015-08-21
“He'd say, 'Watch me carefully, Hideo,' and take a magic marker and paint the connecting pieces in the stone walls around the castle, then wipe them with paint thinner from the top. 'You should always make these fine lines black like this,' he'd say.”
What it documents
Kojima recalled that his father made plastic models of warships and castles, and that he would tell him to watch carefully, calling him Hideo, before taking a marker to paint the joints of the castle’s stone walls and then wiping them from the top with paint thinner, explaining that those fine lines should always be made black.
Source
"My father also made plastic models, like of warships and castles" recalls Kojima