chisel up

verb2

1. •
   To create by chiseling.

   • He chiseled up the details on the sculpture.
2. •
   To cast off splinters or pieces like might be created by chiseling; to (figuratively) cause many or small weak results.

   • The sight chiseled up old anxieties.
   • When the car crashed into the deck, it chiseled up sharp splinters of wood.