The best way to cut a track is to cut through it in two places with a sharp knife and remove a copper section.
Caution!!! Use a good quality knife and don't press too hard to avoid breaking the blade.
Score many times instead of pressing hard. Keep your fingers out of the cutting path.
The BR1 and SB830 are very similar PCBs and excellent choices for making permanent prototypes from full-size breadboards.
The BR1 was our original design as a matching pattern Solderable PC BreadBoard to our BB830 Solderless BreadBoard. Over the years from excellent customer feedback we made some changes and developed the SB830.
The key differences of the SB830 from the BR1:
The current rating is largely determined by the track width and how warm the track is allowed to get.
