How do you calculate polishing media cost per part?

Multiply quantity by the per-unit rate and the consumption factor, add fixed costs, then divide by quantity. For 100 parts at $45 with an 80% factor plus $250 fixed, the total is $3,850 or $38.50 per piece.

What is the media consumption factor?

It is the fraction of the nominal media rate actually consumed on this run, reflecting that not all media value is used up each cycle. An 80% factor on $45 per part captures $36 of media wear per piece before fixed costs.

Why include a fixed cost in media cost?

Compound charge, setup, and bowl preparation cost the same whether you run 50 parts or 500. The $250 fixed cost here adds $2.50 per part across 100 pieces, which matters most on small lots.

Ceramic vs plastic media, which is cheaper per part?

Ceramic cuts faster and lasts longer but costs more upfront, while plastic is gentler and wears faster. Run both through this calculator with their real consumption factors to see the true per-part cost rather than guessing.

How do I lower polishing media cost per piece?

Spread the fixed cost over larger batches, recycle and screen reusable media, and match media aggressiveness to the burr so you do not over-consume. Raising the batch size is usually the fastest lever.

Why is per-piece cost higher on small batches?

The fixed setup and compound cost is divided across fewer parts. At 100 parts the $250 fixed adds $2.50 each; at 25 parts it would add $10 each, so small lots carry a heavier fixed burden.

Mass Finishing, Deburring & Polishing calculator

Polish Media Cost Calculator

Polish media cost captures the real spend on abrasive and polishing media as it wears down running a finishing batch, plus the fixed compound and setup cost that hits every job regardless of size. Media is consumable: ceramic, plastic, and porcelain shapes break down with every hour in the bowl, and that attrition is a genuine per-part cost most shops underprice. Estimators and finishing managers use this to quote jobs accurately and to spot when a media or compound choice is quietly eating margin. It turns a fuzzy supply expense into a defensible per-piece number.

What this calculator does

Calculate polish media cost for mass finishing, deburring & polishing planning, quoting, troubleshooting, capacity review, or process improvement.
Use it when polish media cost in mass finishing, deburring and polishing is being put through a mass finishing, deburring and polishing weighted-cost review.
It multiplies quantity by the per-unit media rate and a consumption factor, adds the fixed cost, and divides by quantity for a per-piece cost.

Formula used

Polish Media Cost cost = quantity × rate × capture factor + fixed cost
Per-unit polish media cost = total cost ÷ quantity

Inputs explained

Parts polished this run:
Media cost per part:
Media consumption factor:
Fixed setup and compound cost:

How to use the result

Use it when quoting a polishing or deburring job, or when comparing two media or compound options on a cost-per-part basis.
The consumption factor is an average; actual media wear varies with cut aggressiveness, run time, and load, so revisit it from real media replenishment logs.

Common questions

How do you calculate polishing media cost per part? Multiply quantity by the per-unit rate and the consumption factor, add fixed costs, then divide by quantity. For 100 parts at $45 with an 80% factor plus $250 fixed, the total is $3,850 or $38.50 per piece.
What is the media consumption factor? It is the fraction of the nominal media rate actually consumed on this run, reflecting that not all media value is used up each cycle. An 80% factor on $45 per part captures $36 of media wear per piece before fixed costs.
Why include a fixed cost in media cost? Compound charge, setup, and bowl preparation cost the same whether you run 50 parts or 500. The $250 fixed cost here adds $2.50 per part across 100 pieces, which matters most on small lots.
Ceramic vs plastic media, which is cheaper per part? Ceramic cuts faster and lasts longer but costs more upfront, while plastic is gentler and wears faster. Run both through this calculator with their real consumption factors to see the true per-part cost rather than guessing.
How do I lower polishing media cost per piece? Spread the fixed cost over larger batches, recycle and screen reusable media, and match media aggressiveness to the burr so you do not over-consume. Raising the batch size is usually the fastest lever.

Last reviewed 2026-05-12.