1. To seal the pores of a wooden cue 's shaft by rubbing vigorously with some material. Leather is commonly employed for the task, as is paper money.
2. To similarly vigorously rub the edge of a cue tip (especially a new one) to fortify it against mushrooming and ensure that it is perfectly flush with the ferrule .
3. To smooth out minor dents in the shaft with a rigid burnisher .