A die degrades sitting still, not running
Why idle dies fail
A die in storage is exposed to humidity, dust and the weight of its own plates. Rust forms on unprotected cavity surfaces, dust settles on the parting line, and a die stacked on the floor can take a set or lose alignment.
Most "the die was fine last time" failures are storage failures, not production failures.
The storage routine
Clean the cavity and vents, dry thoroughly, apply the specified rust preventive, and close the die on a clean parting line without clamping it hard. Blank off water circuits or drain them fully, and label the die with the last shot count and any known issues.
Store on a rack or a purpose-built stand, not on the floor and not stacked. Vents are the most commonly overlooked item: blocked vents show up as porosity on the first run back.
Handling
Lift only at the designed lifting points, with a spreader that keeps the plates level. Lifting a die by the leaders or by an ejector plate distorts alignment in ways that only appear when the die is back in the press.
Record where it is stored. A die that takes two days to find is a die that gets replaced.
FAQ
How should a die be cleaned before storage?
Remove residue from cavity and vents, dry completely, apply the specified rust preventive, and close on a clean parting line.
Can dies be stacked on the floor?
Not recommended. Use a rack or stand so plates are not distorted by their own weight or by other dies.
What is most often missed?
Vents. They are small, easy to skip during cleaning, and blocked vents cause defects on the first run after storage.
Should water circuits be drained?
Yes, drain or blank them off. Residual water promotes corrosion inside the circuits and can leak into the die.
All figures above refer to standard product data sheets; final confirmation is subject to written quotation.