There are too many dangers to cutting carbon brushes. With fine sandpaper and a file, you may file down brushes until they fit your machine’s brush holders. This method is the best alternative.
Here at TDO Carbon, we have a variety of “generic” brushes that may be changed like this to suit your application, as well as specialised ones to meet the model of your power tool.
Brushes are not need to be worn in at all after they are fitted, as they may be used immediately..