All Wildwoods featured maple necks, Rosewood fingerboards and Mother-of-Pearl block inlays. Conklin Guitars and Basses makes use of wenge for bodies, fingerboards and necks. Warwick electric basses use FSC sourced wenge for fingerboards and necks as of 2013. Some fingerboards have frets or bars which the strings are pressed against. Its wood is often used for making fingerboards for electric basses and guitars. However some recent five and six string electric basses have flat fingerboards. In recent years, guitars and basses with multi-scale or fanned-fret fingerboards started to appear. Some very old violins were made with maple fingerboards carrying a veneer of ebony. In guitar making, pau ferro is mainly used for fingerboards and bridges. These models have walnut bodies with a hand-rubbed oil finish, and unfinished maple fingerboards. Binding may be used along the sides of fingerboards of fretted instruments. In 2017 Fender switched to pao ferro fingerboards before discontinuing the Standard series in 2018. Scalloped fingerboards added enhanced microtonality during fast legato runs. A few modern luthiers have used lightweight, non-wood materials such as carbon-fiber in their fingerboards. For scraping convex shapes such as violin fingerboards, small flexible rectangular scrapers are useful.