3D Print Manager tracks filament from GCODE, helps small print farms reorder

Keeping filament stocked across more than one printer is where a lot of small farms start to bog down. 3D Print Manager tries to take that headache off the bench by reading GCODE, calculating how much material a job will use before the first layer goes down, and subtracting that amount from inventory automatically.

The system was built by solo developer Damir Druško in Croatia and is aimed squarely at operators who have moved past casual printing. Its pitch is simple: track printers, AMS slots, jobs, filament inventory, and real print costs from one place, then use that live data to avoid the classic failures of running dry mid-job, duplicating spools you did not need, or discovering too late that the wrong color or material is missing for a deadline.

The Smart Reorder feature is the practical heart of it. The product says it predicts stockouts using real usage, active jobs, queued jobs, and a supplier’s delivery time, then recommends when to reorder. The dashboard example shows how blunt that can get in real use, with critical alerts such as about 1.8 days left for one spool with 220 grams remaining and 2.4 days left for another with 350 grams left. For anyone juggling customer work, that kind of warning is more useful than a spreadsheet that only gets updated when someone remembers.

3D Print Manager also pushes hard on the money side of the workflow. Its cost calculator breaks pricing into filament material, electricity, optional labor, and profit margin, and the site says many farms underprice prints by 20 to 40 percent. The product site uses a 20-printer farm as an example and says the system is already used by real print farms with more than 20 printers, which tells you exactly who it is trying to serve.

The software runs in the browser, on Android, and on Windows with real-time sync. The manual says new accounts get two demo spools automatically, supports English, Croatian, and German, and lets each spool store nozzle temperature, bed temperature, flow rate, K-factor, and notes. Multiple spools of the same type are grouped, each spool gets its own QR code and weight bar, and operators can scan in and out without living inside a spreadsheet.

Pricing stays relatively low-stakes for the hobby crowd: the free tier covers up to 15 spools and two material types, Pro costs €4 per month for one to five printers with unlimited filaments, and the RARM tier is €15 per month for six or more printers and teams. For a single printer, it is probably overkill. For a small farm trying to keep jobs moving and shelves from going empty, it looks like the kind of software that earns its keep quickly.