In Bolt Action, several guns (the American 75 mm guns, Soviet Zis-3, Bulgarian Skoda guns, some auto cannons) can fire HE or AP rounds. When putting one of these guns in ambush you are required to nominate whether the gun is loaded with a HE or AP round. Keeping track of this can be difficult so deweycatproductions has produced an stl for
game aids which are reversible HE/AP Order dice holders. These print in resin and FDM and include a pre-supported file for the resin print.