Fingerboard mold
Free     Thingiverse     Turbo1552

Fingerboard mold

can make up to 34mm wide and 98mm long fingerboards 2 templates 34mm 32mm resize the templates for the desired width concave wont match up but its oncy for tracing ...

similar models —

Fingerboard mold alternatives
Pen Mold Mold
thesaxmachine
Bath Bomb Mold
Calin Olsen