Bulk filament for education: what to buy for a school or makerspace

Short answer

Bulk filament for education is PLA bought by the kilogram, standardized on 1.75 mm, with a tight range of a few common colors. PLA is the workhorse because it prints easy at a low temperature, costs the least per kilo, and runs on any school machine, so a single bulk buy covers most of the class. Keep a small reserve of PETG for the projects that need toughness.

Why PLA leads the education buy

A school or makerspace runs many users at different skill levels on mixed machines, so the filament has to be cheap, easy, and forgiving. PLA hits all three. Per the Prusament PLA datasheet, it prints at a 210 C nozzle with a 10 C window and a 55 to 60 C bed, so it runs on almost any school printer with no heated chamber. It is also the cheapest mainstream filament per kilo, which matters when you stock for a whole class.

The per-kilo cost is the number to track, not the per-spool price. Buy by the kilogram, standardize on 1.75 mm so any machine can use the stock, and compare net weight, not spool count, between suppliers.

Materials for the education budget

Keep the range tight

Stock PLA in a few common colors for the bulk of the demand, and hold a small amount of PETG for the projects that need durability. A wide range of slow sellers ties up the budget and goes stale, so widen the range only when a color proves it gets used.

For the shared-space angle, the filament for FabLab page covers the makerspace case, and the bulk filament page covers the supplier programs.