We have dubbed our small parts sprues as "Forest" Sprues due to the way they are arranged for casting.
Amongst the benefits this method offers are that we can make very small detailed items without mould lines of any sort in a much smaller mould.
Small 1mm Round Head Rivet Sprue - X 175
Small Hex Bolt Rivet Sprue - X 175
Steampunk Ammunition Magazines and Rounds
Various Handles x 12
Vehicle Bits Forest Sprue A Including Fuel Tanks
Vehicle Bits Forest Sprue B Including Sump Plate