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Epoxy resin curing time calculator

Estimate demoulding, sanding and full-cure time from TDS values, workshop temperature, layer thickness and casting mass.

Input data

Enter workshop assumptions. The result is recalculated locally in your browser.

Technical sheet value at 20°C.
Machining time at 20°C.
Full resistance, often 7 days.
Lower temperature slows curing.
Real pour thickness.
Product limit.
Higher mass increases exotherm risk.
Are you adding pigment or filler?

Does this replace the TDS?

No. It is a working correction applied to values from the TDS. If the technical data sheet says otherwise, the TDS wins.

What extends curing the most?

Low temperature, layers above the limit, pigments, poor mixing and inaccurate ratios. With larger mass, exotherm risk also matters.

When can epoxy be sanded?

Only when it is mechanically stable and does not clog abrasive paper. Sanding too early causes scratches, gumming and milky dust in the surface.

What should be saved with a project?

Save temperature, pour time, layer thickness, mass and product. It helps separate chemistry issues from workshop conditions and process errors.

Related pages

LinkEpoxy resin curing timeFull curing process guide. LinkEpoxy resin exothermReaction heat and risk. LinkWhat is pot lifeWorking time of the mix.

FAQ

Why does cold slow curing?

The epoxy reaction slows in lower temperature, so machining and full-resistance times can increase significantly.

Can I speed curing with heat?

Only according to the TDS and with control of casting mass. Aggressive heating can reduce quality or trigger exotherm.

Can pigment change curing time?

Yes, especially at high dosage or with incompatible colourants. Larger projects should be tested on a sample.