I did some cuttle fish casting earlier and I’d like to share the process with you. I really like the natural pattern and the material. AND > It is a great way to use up your scrap silver.
How do you make a silver cuttle fish casting? You start by going to a pet shop and buy at least 2 cuttle fish bones. You need some sandpaper a flat surface, files, masking tape and lots of heat.Sand the cuttle fish bones until they are flat and fit together perfect. Than with a file make the shape in one of the bones you want to cast, here just a plain rectangle. With a cutter make a gutter around the chosen shape. This is to let the air out when the silver goes in. Also make a V-shape in BOTH bones to poor the silver in later, about 4 cm or 1,25 inches in size.
Brush the bones to get more detail in the wavy pattern. Make extra tiny vents from the chosen shape to the gutter/air vent.
Sprinkle both sides with a pinch of BORAX powder.
Melt enough silver for the cast, better too much than too little :-) Here a small kiln is used and a torch to speed up the melting, but you can use just a torch by itself as well.