How do you calculate potting material usage?

Multiply dispense rate by runtime for compound consumed, then multiply by unit cost. At 12 units/hr for 8 hours, that is 96 units consumed; at $3.50 each the run costs $336.

Why is my actual potting consumption higher than calculated?

This model assumes clean, steady dispensing. Real lines lose material to purge shots, off-ratio scrap at startup, cured leftovers past pot life, and overfill, so budget a waste allowance above the 96-unit baseline.

How do I budget potting resin for a production run?

Set dispense rate from your metering pump, multiply by planned runtime, then add a waste factor. The base run here is 96 units at $336; a 10% waste allowance would push it toward 106 units and about $370.

Does pot life affect potting material usage?

Indirectly. Short pot life forces smaller batches and more frequent purges, which raises effective consumption above the steady-state 96-unit figure even though the dispensed-onto-part volume is unchanged.

What does the potting compound cost input include?

Use the delivered cost per dispensed unit of mixed compound, including both parts of a two-part system and any freight or hazmat surcharge, so the $3.50 reflects true landed cost.

How can I reduce potting material run cost?

Tighten fill volume to spec, cut purge frequency, and improve mix-ratio control to shrink off-ratio scrap. Each reduces effective consumption below the modeled 96 units without changing the part design.

Power Electronics, Motors & Drives calculator

Potting Material Usage Calculator

Potting material usage tells you how much encapsulation compound a run consumes and what that material costs. Process and cost engineers potting motors, drives, and power modules use it to budget resin, plan reorders, and cost jobs where two-part epoxy or polyurethane is a meaningful line item. Because potting compounds have limited pot life and are often bought in matched kits, over- or under-estimating usage wastes money or stalls the line. This calculator turns a dispense rate and runtime into consumed volume and run cost.

What this calculator does

Estimate potting or encapsulant consumption and cost for power modules, gate drivers, coils, sensors, converters, and motor electronics.
Use it when budgeting epoxy, silicone, polyurethane, or gel potting material for inverter, converter, drive, or motor control builds.
It multiplies dispense rate by runtime to get compound consumed, then multiplies by material cost for the run cost.

Formula used

Potting material consumed = potting dispense or use rate × potting production runtime
Potting material run cost = material consumed × potting material cost

Inputs explained

Potting compound dispense rate:
Potting line runtime:
Potting compound cost:

How to use the result

Use it to budget potting resin for a job, plan material reorders, or cost the encapsulation step of a drive or motor.
It assumes a steady dispense rate and ignores mix-ratio waste, purge shots, and pot-life scrap, so real consumption often runs higher.

Current U.S. benchmarks

The producer price index for copper and brass mill shapes stands at 559.593 (BLS, May 2026), up 76.8% from a year earlier. Quotes priced off last quarter's material cost miss this move. Global copper trades at $13,484 per tonne (IMF via FRED, May 2026).
The U.S. has 11,261 computer and electronic products establishments employing about 815,443 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate potting material usage? Multiply dispense rate by runtime for compound consumed, then multiply by unit cost. At 12 units/hr for 8 hours, that is 96 units consumed; at $3.50 each the run costs $336.
Why is my actual potting consumption higher than calculated? This model assumes clean, steady dispensing. Real lines lose material to purge shots, off-ratio scrap at startup, cured leftovers past pot life, and overfill, so budget a waste allowance above the 96-unit baseline.
How do I budget potting resin for a production run? Set dispense rate from your metering pump, multiply by planned runtime, then add a waste factor. The base run here is 96 units at $336; a 10% waste allowance would push it toward 106 units and about $370.
Does pot life affect potting material usage? Indirectly. Short pot life forces smaller batches and more frequent purges, which raises effective consumption above the steady-state 96-unit figure even though the dispensed-onto-part volume is unchanged.
What does the potting compound cost input include? Use the delivered cost per dispensed unit of mixed compound, including both parts of a two-part system and any freight or hazmat surcharge, so the $3.50 reflects true landed cost.

Last reviewed 2026-05-12.