This leather necklace is designed to be laser cut from 1mm - 1.5mm leather. It's made from four parts: front detail, backing pieces and two straps.You need the following to join the pieces:~ Glue to affix the front detail to the backing piece. PVA will work well, but the adhesive has to be applied very carefully to avoid spills. Once dry, you won't be able to remove excess glue without marking the leather~ Thread or nylon to attach straps.~ Dome to fasten the necklace