Spring set builder
A tool's die springs are replaced as a complete set — springs of mixed age give uneven force across the tool. List the positions; add the whole set in one click. ISO 10243, all four load classes, dimensions verified.Not sure which class a position needs? The spring finder does the force arithmetic from the verified rates.
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Why sets, in one paragraph
A die spring loses rate over its fatigue life. Replace one spring of eight and that position pushes harder than its neighbours; the platen loads unevenly and the newest spring wears fastest. Every maker's service note says the same thing — replace the set — and every catalogue still sells singles. We sell the set.