Heavy ribbed fluting gives an amazing expressiveness to the cupola. Horns usually have a curved or spiral shape, often with ridges or fluting. Doric and usually Ionic capitals are cut with vertical grooves known as "fluting". Fluting in architecture consists of shallow grooves running along a surface. The robin produces a fluting, warbling during the breeding season. The song of the yellow oriole is a pleasant melodious fluting, with some buzzing. The bottom rollers were wood and metal, with fluting along the length. During the Hellenistic period, Corinthian columns were sometimes built without fluting. Here the slight fluting of the stone columns seems almost excessive ornament. Fluting knives are ideal for small tasks such as decorating and peeling. Bifacial fluting describes blades on which this feature appears on both its sides. The barrel fluting was omitted and the flash hider was changed. It has sixteen faces with slight fluting to create a crown at the top. A basic shot glass with fluting featured on the base of the glass. The glue is applied on tips of the fluting.