Student or Learner
What does it mean in the following paragraph "stroke that hard" "reassuring smoothness ever so lightly" and "out of long habit"?
Context is that of a man who has strapped a knife to his forearm, under sleeves, and fingertips its hilt, and then..."He stroked that hard, reassuring smoothness ever so slightly, out of long habit."
This "that hard", is it meaning "very hard"?
Is that meaning "He hit very hard, and made sure it (the hilt) was smooth with softness, which all was a habit since long time ago"?
Thanks for assistance.