Eagerly awaiting more information on the J1, if by video, post, or manual with details. Find myself guessing my way through using this printer. Snap maker please post more info.
There is wiki - Snapmaker J1/J1s | Snapmaker Wiki
And if something is missing, please Wiki Content Request
You can also checkout this list of articles - GitHub - shurushetr/awesome-snapmaker: Curated list of things that help you make something awesome with Snapmaker machines.