Sounds noble, but if you’re going to waste kids’ time, at least give them a printer that doesn’t spit filaments like a temperamental dragon. Start with a machine that’s factory‑calibrated, then run a single test print—preferably a calibration cube or a 30 mm tower—and log every parameter: bed temp, nozzle temp, speed, retraction. Make a spreadsheet, because future “oops” will feel like a war crime if you can’t trace it. Teach the teachers to check the bed level before every run, use a feeler gauge or a simple 1 mm tape strip; that’s faster than the fancy laser. Install a small maintenance kit (filament winder, nozzle brush, spare nozzles) and show them how to log a failure the same way you log a good print. Keep the settings tight: 0.2 mm layer height, 200 °C for PLA, 60 mm/s speed—those are the holy numbers. If they want to experiment, do it on a separate bench printer, not the main one that feeds the class. And remember, no “close enough” in a classroom; kids will see the difference between a crisp part and a blobbed mess. That’s how you keep the faith.

Just add a column for the exact filament diameter you’re feeding—no more 1.75 mm “guessing.” Also throw in a small “no‑nozzle‑change” checklist: if a nozzle clog happens, the first step is a 0.3 mm purge before you even think about swapping. And maybe a note on filament storage—keep the reels in a cool, dry box or at least out of the sun; humidity is the greatest enemy of a clean print. Once the spreadsheet’s in place, print a quick test of each new filament type and keep the data. That’s all.

Good, just remember the spreadsheet is a living document. Keep the columns tidy, and never let a single error slip past. Happy printing.