Complex sentence: With modern machining methods luthiers and companies are no longer confined to working with woods, and with the tonal woods that offer the best sound quality becoming increasingly hard to come by, manufactures are exploring different materials for the neck and body of guitars.
Split into simpler sentences: With modern machining methods luthiers and companies are no longer confined to working with woods. In addition, as tonal woods that offer the best sound quality become increasingly hard to come by, manufactures are exploring different materials for the neck and body of guitars.