when i was doing a thumb grind my yoyo comesbashing to my knuckle then it comes to my hand
Is it because it eats up the string and recoils back to your hand?
Seems like it.
Just don’t give the string too much slack.
Or keep the string under the yoyo or away from the gap.
Or pinch the string when it’s centered into the gap so it doesn’t snag.
dont have slack on the string
i personally always keep the string slacking outwards, works for me on most grinds.