Cutting Wheel Manufacturing Break-Even Analysis: ~$95K/Month

Break-Even Metric Cards

Fixed costs $68.3K/mo Monthly fixed base

Contribution margin 70.4% Left after variable

Break-even revenue $97.0K/mo Sales to cover fixed

Break-even timing Month 2 Model break-even point

Break-Even Calculator

Break-even calculator

Use this calculator to test monthly sales against direct costs and fixed overhead.

Lean Base Full

Monthly revenue Use monthly sales before costs; it sets the cash pool that has to cover direct cost and overhead. $ Slow month Busy month Variable expenses Include materials, direct labor, freight, commissions, and other costs that rise with output. $ Light direct cost Heavy direct cost

Money available to cover fixed costs $278,583 $386,500 revenue - $107,917 variable expenses

Margin ratio

72%

Covers fixed costs

Yes

Fixed monthly costs Include rent, salaried staff, insurance, software, and other monthly overhead. $ Lean overhead Higher overhead

Break-even chart Revenue Total costs

Which cutting wheel manufacturing expenses are fixed, and which move with sales?

Cost classification

This model reaches break-even in Month 2 only if unit-driven items stay out of fixed overhead. Keep the $24,950 monthly facility overhead and $43,333 first-year salaried payroll fixed, then let materials, freight, commissions, power, and testing scale with production or sales.

Expense	Cost	Break-Even Treatment	Common Mistake
Abrasive grains, bonding resin, reinforcement, mesh, and cores	Variable	Apply the per-unit material inputs to each wheel produced.	Treating raw materials as fixed overhead.
Direct assembly labor	Variable	Include the per-unit labor amount in unit economics.	Moving all plant labor into salary overhead.
Labeling, shrink wrap, and packaging	Variable	Scale pack-out expense with units produced and shipped.	Ignoring small packaging items that add up.
Sales Commissions	Variable	Model as a sales-linked percentage, starting at 5.0% in the first year.	Using gross revenue before selling fees.
Distribution and Freight	Variable	Model as a revenue-linked shipping expense, starting at 4.0% in the first year.	Burying freight inside general overhead.
Factory power, testing, upkeep, waste, cooling, dust control, clean room upkeep, and inspection	Semi-variable	Keep a base plant load, then scale usage-linked amounts with production or revenue.	Using one flat plant expense at every volume.
Facility lease, recurring overhead, and first-year salaried payroll	Fixed	Hold the $12,500 lease, $24,950 recurring overhead, and $43,333 payroll steady in the monthly break-even base.	Allocating fixed overhead per wheel too early.
Supervisor and technical sales headcount	Semi-fixed	Add expense in hiring steps as staffing rises with operating scale.	Smoothing future hires as a variable percentage.

How does break-even change across lean, base, and full utilization in cutting wheel manufacturing?

Scenario table

Break-even shifts because each case changes revenue, variable cost rate, and fixed costs. The lean case stays close to zero, while base and full utilization spread overhead across more sales and build cushion.

Planning assumptions only; actual break-even will move with mix, yield, and overhead.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean lease-risk case	$97k	$29.1k	$68.3k	70.0%	-$0.4k	Use this to test rent pressure and thin margin.
Base launch plan	$187.5k	$55.5k	$68.3k	70.4%	$63.8k	Covers overhead and gives a small monthly cushion.
Full-utilization case	$1.157M	$303k	$110.8k	73.8%	$743k	Higher volume absorbs more fixed cost and widens cushion.

What pushes this cutting wheel plan back to break-even?

Stress test

The base plan clears break-even, but the cushion shrinks fast if distributor reorders slow, scrap rises, or resin, abrasive grain, freight, and utilities move up. A $10k monthly overhead creep already matters.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change in revenue or cost rates.	$97.0k	$90.5k cushion	Solid cushion, but steady reorders still matter.
Revenue shortfall	Monthly revenue falls 20% to $150k.	$97.0k	$53.0k cushion	Still above break-even, but the buffer is thinner.
Fixed-cost pressure	Fixed overhead rises by $10k per month.	$111.3k	$76.2k cushion	Lease, maintenance, or lab creep lifts the target fast.
Margin pressure	Variable costs rise 5 points from resin, grain, freight, and scrap.	$104.4k	$83.1k cushion	Small input shocks can erase a large part of the buffer.
Combined pressure	Revenue drops 20%, variable costs rise 5 points, and fixed costs add $10k.	$119.7k	$30.3k cushion	One more cost spike could push the plan close to loss.

What should you verify before you lock the plant lease and buy the equipment?

Founder checklist

Before you sign the lease and buy the line, prove the first-year order base, unit margins, and cash runway still work. The model starts at 180,000 units in Year 1, reaches 695,000 by Year 5, and still needs $852K of cash in Month 2, so early demand has to show up fast.

1Demand Proof180K units

Get letters of intent that support the 180,000-unit Year 1 plan and the 695,000-unit Year 5 run rate, because the lease only works if volume gets out of the gate.

2Fixed Load$68.3K/mo

Stack the $12.5K lease with the other fixed costs and Year 1 base payroll, because the plant burns about $68.3K a month before a single wheel ships.

3Margin Check61% CM

Re-quote abrasive grains, resin, fiberglass, mesh, cores, packaging, freight, and testing so the first-year mix stays near a 61% contribution margin (CM), which is what pays the fixed bill.

4Capacity Ramp$697K capex

Run pilot output through the press, oven, and scanner flow, then confirm safety certification, calibration, dust extraction, waste handling, and quality testing before you commit to the full $697K equipment stack.

5Cash Runway$852K

Keep enough cash for the Month 2 trough of $852K, because break-even lands in Month 2 and collections will not save you that early.

6Launch DemandLOIs first

Get distributor letters of intent before you expand the technical sales team, because the staffing ramp from 2 FTE in Year 1 to 6 FTE by Year 5 only works with repeat orders.