
Hyunjeong O. answered 05/01/19
Native Korean Speaker who loves to teach Korean!
"방금" indicates past tense and "금방" can be either past or future tense.
They have same meaning.
For example, "방금 숙제 다 했어" is " I just finished homework"
" 숙제 금방 할게" is " I will finish homework soon" -> future tense
" 너 언제 이거 만들었니? , 금방 만들었어 " is " When did you make this?, I made it just now" -> past tense
Hope this is helpful! :)