A production mold is usually the most expensive item in the cell, and the one whose care depends most on daily habits. These four take minutes and prevent the expensive kind of Monday.
Look at the parting line every shift
Flash, drag marks and shiny witness spots on the parting line are the mold asking for help early. A thirty-second look at shift start catches a venting or clamping issue while it is still an adjustment, not a welding job.
Keep vents doing their invisible work
Blocked vents show up as burn marks, short shots and slowly rising injection pressure. Clean vents with the solvent and tools the toolmaker specified — never with anything that can round an edge. A vent that has been “polished helpful” by hand is a vent that no longer vents.
Treat water fittings as tooling, not plumbing
Drips at quick couplings end up in guide bores and on cavity faces. Replace o-rings on schedule, blow circuits dry before the mold leaves the press, and cap open fittings the moment hoses come off — condensation inside a stored mold does its rusting in the dark.
Close every run with a documented wipe-down
Before the mold goes to the rack: clean the faces, apply the specified protective film, note shots run and anything watched, and photograph the cavity. The photo costs nothing and settles every future question about when that mark first appeared.
