Zippers and velcro fastenings have replaced laces and buckles at the calves as well. Other types of fastenings include zippers, Velcro, and magnets. These came complete with detachable hoods and toggle fastenings. The casing was modernized with more snap-fit fastenings and fewer screws. There are no mortise and tenon fastenings, and no sewing. Alternative fastenings may be used and pockets inserted to avoid the need for a sporran. This especially applied to long thin fastenings such as screws in boats that have motors. In 1923, Albert H. Tinnerman originated the first all-porcelain enameled gas range with concealed fastenings. BPB's other products include plaster, insulating materials, fastenings, decorative wall covering and ceiling components. Even the cast iron dome's fastenings had rusted through and many plates were cracked. Most 18 gauge brads have heads, but some manufacturers offer headless fastenings. The early gliders were made mainly of wood with metal fastenings, stays and control cables. However, construction faced quality problems concerning sleepers and fastenings. Mongolian deels always close on the wearer's right and traditionally have five fastenings. Some port authorities instruct linesmen to cut off monkey's fists that use these fastenings.