Your spreadsheet
is lying to you.

Every order you printed last month had a margin. Some were great. Some lost money. Your spreadsheet doesn't actually know which.

MISSED: Etsy offsite ads 12%MISSED: Failed prints +6% materialMISSED: Packaging $0.42/orderMISSED: Machine power $0.18MISSED: Payment processing 3%MISSED: Listing fees $0.20MISSED: Regulatory 0.32%MISSED: Etsy offsite ads 12%MISSED: Failed prints +6% materialMISSED: Packaging $0.42/orderMISSED: Machine power $0.18MISSED: Payment processing 3%MISSED: Listing fees $0.20MISSED: Regulatory 0.32%MISSED: Etsy offsite ads 12%MISSED: Failed prints +6% materialMISSED: Packaging $0.42/orderMISSED: Machine power $0.18MISSED: Payment processing 3%MISSED: Listing fees $0.20MISSED: Regulatory 0.32%
Exhibit A

A real $14.99 dragon. Two stories.

Your spreadsheet says

Per order

Margin: $5.54

Sale price$14.99
Filament (~145g)−$1.09
Machine cost−$1.63
Etsy fee (rough)−$1.30
Shipping−$5.43
"Profit"$5.54

Sale price minus a few costs. Move on.

Reality

3D PrintForce says

Margin: $0.23

Sale price$14.99
Filament (~145g, real cost)−$1.09
Failed-print rework (~6%)−$0.07
Machine cost (incl. power)−$1.63
Labor (post-process)−$2.00
Packaging−$0.42
Shipping (real label)−$5.43
Etsy transaction (6.5%)−$0.97
Payment processing (3% + $0.25)−$0.70
Listing fee−$0.20
Offsite ads (15%)−$2.25
Real profit$0.23

Highlighted lines are the ones your spreadsheet skipped.

That's a 96% margin difference on the same listing.

Multiply by the orders you'll ship this month. That's the leak.

Try it on your bestseller

Run the math. Free.

The exact same calculator that powers the OS. No signup. Surprise yourself with one number.

Model Information

Printer Model for Costing

Printer Profile

Parts & Filaments

Total: 185g · $4.07
Filament
Total
$4.07

Pricing

Recommended Sale Price

$27.45

Based on 30% desired profit margin

Total COGS

$16.61

Est. Fees

$2.61

Est. Profit

$8.24

Profit Margin

30.0%

Marketplace Pricing

Starter

Charge each marketplace what it's worth.

Etsy buyers pay more. Amazon takes a bigger cut. Per-marketplace pricing keeps every channel on-target — automatically.

Etsy

$27.45

+$8.24

Shopify

$22.99

+$8.10

Amazon

$32.99

+$9.10

TikTok

$24.99

+$7.40

Upgrade to Starter

Cost Summary

Total $16.61 / unit

Filament

$4.07

Printer

$1.44

Labor

$6.00

Supplies

$5.10

Total COGS

$16.61

Filament24.5%Printer8.7%Labor36.1%Supplies30.7%
What's an OS for print sellers?

An operating system,
built for your kind of business.

You already use a printer's OS to drive your machines. 3D PrintForce is the OS for the business around them — orders, margin, fees, filament, post-processing — built specifically for people who sell what they print.

Who it's for

Anyone selling 3D prints

Etsy. Shopify. TikTok Shop. Amazon Handmade. eBay. One printer or fifty. Side hustle or full-time. If you sell what you print, this was built for you.

What it handles

The stuff a spreadsheet can't

Live orders, real margin, marketplace fees, filament stock, print queue, post-processing — all in one place, all updating themselves. The boring operational glue, handled.

Why now

Built for what's coming next

It solves the headaches you have today — and the ones you don't know about yet. The fee that quietly doubles, the listing that stops being profitable, the printer you'll add in six months.

Other tools are built for general businesses. This one's built for ours.

After you've seen the number

Once you see it,
you can't unsee it.

01 — Real margin

Every order, real margin, every month.

Stop projecting. Stop guessing. The math from the calculator runs on your real Etsy orders. Profit is a column, not a vibe.

02 — Marketplace fees

The fees Etsy doesn't show you in one number.

Transaction. Processing. Listing. Offsite ads. Regulatory. We break each one out, per order. The bleed becomes visible.

03 — Order ops

A queue that knows the real cost.

Orders flow in from Etsy automatically. Status stays current. Print queue routes to SimplyPrint. Filament auto-deducts. The boring parts, not done by you.

Sam Erickson

Founder · Print farm operator

A note from Sam

I ran the numbers on my own farm first.

I run a print farm. I sell on Etsy. I built spreadsheets so big they didn't fit in my head, and I still had the wrong margin number on most of my listings.

So I rebuilt the math from the ground up — every line item, every fee, every wasted gram of filament. That math is the calculator. The OS — orders, margin, inventory — is what runs that math on every real order, automatically.

The real number will probably surprise you. It surprised me.

— Sam

Pricing

Free math. Cheap fix.

Join 6,200+ sellers who fired their lying spreadsheet

MonthlyAnnual2 months free

Calculator

Free, forever, no account

$0
Run the math

Includes:

  • 3D print profit calculator

    Calculate model profitability based on material, labor, machine costs, and marketplace fees

  • Real-time COGS & margin math

    See every cost line item update as you enter data

Starter

Run your farm

$12.50/mo

$15/mo if billed monthly

Get started

14-day money-back guarantee


Everything in Calculator, plus:

  • Save unlimited model calculations

    Save and reuse cost calculations for any model

  • Unlimited printers & filaments

    Store configs, hourly rates, spool costs, and material types

  • Unlimited marketplace profiles

    Configure fee structures for any sales channel

  • Custom shipping profiles

    Save shipping rate configurations

  • Manual orders & print queue

    Create orders and manage print jobs across your printers

  • Inventory management

    Track filaments, model supplies, and shipping supplies

Most popular

Growth

Automate the operation

$32.50/mo

$39/mo if billed monthly

Get started

14-day money-back guarantee


Everything in Starter, plus:

  • Etsy auto-import (real-time)

    Sync orders automatically from Etsy, more coming soon

  • SimplyPrint + Discord integrations

    Connect SimplyPrint, Discord, and more coming soon

  • Automated print queue routing

    Print jobs route to printers automatically through SimplyPrint

  • Stock auto-deduction from orders

    Deduct inventory automatically from real orders

  • Advanced analytics dashboard

    Track material usage, margins, and shop profits

  • Multi-user team access

    Invite your team with role-based access

14-day money-back guarantee. Cancel anytime. No contracts.

Honest answers

What exactly is the 'OS'?+
It's the workspace where your orders, margin, marketplace fees, filament stock, and print queue all live in one place — instead of in five tabs and a spreadsheet. Built specifically for 3D print sellers, on any marketplace.
Is the calculator really free?+
Yes. No account, no email, no time limit. The OS is what we charge for.
My spreadsheet works fine. Why bother?+
Run one of your bestselling listings through the calculator. If the number matches your spreadsheet exactly, you're already perfect — close the tab. If it doesn't, you have your answer.
I tried other tools. They were complicated.+
Same. That's why the front door is just a calculator. You only meet the OS when you've decided you want it.
What if it's not for me?+
Try it for 14 days. If it doesn't earn its keep, email us and we'll refund you in full — no forms, no questions. After that, cancel anytime; no contracts, plan stays active until the end of the current billing period.
Who is behind 3D PrintForce?+
Sam — a real print farm operator who got tired of being wrong about his own margin. 3D PrintForce is run by a real human.

Do the math on one model.
Then keep going.