Casio Strap Adapter 3D print model
This is a 3D printable adapter for your casio ( or other) watches. This adapter lets you use different straps if they don't fit on the spring bars. The dimensions for this adapter is meant for an 18mm strap width and 1~1.3mm diameter spring bar. The model can be printed without supports but you may have to play with your settings to get a nice spring bar hole.