He didn't know if he could reveal this. Even if they were his friends, he still needed to have somethings he didn't tell them. If he told them about it, it would eventually lead to his parents, who he wasn't ready to face yet.
So, he just shook his head lightly as he was about to answer, and the girls didn't push it, they too had things they hadn't shared.
They simply weren't close enough, and they had all experienced Jon's friends' betrayal. It wasn't right to just start saying everything.
It became a little solemn until Jon just continued,
Day 4
-After you have gathered the materials, you can start to plan out the design of your sword. Now, that is where the 'Mind world' comes into play. For a beginner, it is best to start with the simplest thing you can think of, the goal for now isn't perfection, but understanding.