Hey Gus,
glad to hear you have success now.
By the way, the manufacturer offers these support videos:
- How To Position A Wasteboard Inside The Cutting Area on the Onefinity CNC
- Flattening A Wasteboard On the Onefinity CNC
By the way, be sure that before flattening the wasteboard, you made the two checks for rectangularity (“squaring”) and coplanarity (that machine is not twisted) (e.g. with the two fishing lines method) as explained here, as flattening the wasteboard can remedy none of them. Especially the check for coplanarity, as the result would be twisted workpieces.
Welcome to the forum!