I’m Sean. I sell 3D prints on Etsy, and I built SpoolPilot.
I could never get a straight answer on what an order actually made after Etsy’s fees, filament, and my time. Spreadsheets fell behind, and every other tool wanted a desktop. So I built the one I wanted: real profit, in my pocket, right at the printer.
- My shop
- Opus Design Company
- Sales
- 3,100+
- Rating
- 4.8 stars from more than 700 reviews
- What I sell
- 3D-printed coffee gear: dosing stands for grinders, filter holders and brewer accessories
- I print on
- A few printers in a spare room
Sales and rating as of October 2026.
Writing on this site
The guides come out of running my shop: the fees I pay on each order, the way I price a new listing, and the way I keep count of sealed spools.
Guides
- How to price 3D prints
Cost, fees and margin, solved for a price, with a worked example.
- How to calculate the real profit on a 3D print
One order rebuilt from the payment account, then a month.
- Etsy fees for 3D print sellers
The four fees on a US sale, and an order with shipping run all the way through.
- Why Etsy takes more than the rate card says
Five places the formula and the ledger disagree, and a ten-minute check.
- How to track filament inventory for a 3D printing business
Sealed spool counts, usage rate and weeks of stock.
- What software does a 3D printing business actually need?
The four numbers a small shop has to trust, and which tools give them.
Comparisons
- 3DPCC vs SpoolPilot
Pricing a print before you make it, and what it made after it sold.
- A Craftybase alternative built for 3D print shops
Handmade bookkeeping next to a tool that knows what a spool is.
- Spoolman vs SpoolPilot
Grams left on a spool, or money made by the shop.
Reference
- What SpoolPilot reads from Etsy
Every field the app reads, and what it never touches.
I also built the free 3D print cost and price calculator.
Elsewhere
- Etsy shop
- Opus Design Company
See what each of your orders actually made
SpoolPilot is an iPhone app published by Opus Design Group LLC. It reads the fees Etsy charged on each order, subtracts filament, electricity and packaging, and shows the profit per sale, per product and per month.
Download SpoolPilot on the App StoreDownload on the App Store