Filament for a FabLab or makerspace: what to buy in volume and why

Short answer

For a FabLab, makerspace, or shared school printer, PLA is the filament to stock in volume. It prints easy at a low temperature, costs the least per kilo, and needs no heated chamber, so beginners get good results on a mix of machines. Keep PLA+ for tougher student parts and PETG for durable or functional prints.

What a shared space asks of a filament

A shared space runs many prints a week from users with a wide range of skill, often on a mix of older and newer machines. That puts a premium on a filament that forgives a bad first layer, prints at a low and safe temperature, and stays cheap when you buy it by the kilo. Low odor matters in a room several people share, and PLA scores well on all three. That is why it is the default in most makerspaces.

PLA is the fablab default

PLA prints at a 200 to 210 C nozzle and a 60 C bed, per the Prusament PLA datasheet, so it runs on almost any machine with a heated bed and no heated chamber. It does not warp much, it sticks to a clean sheet, and beginners get a usable first print without much tuning. It is also the cheapest mainstream filament per kilo, which adds up fast when you stock for dozens of users. Bambu’s PLA guide backs the low bed temperature and the easy handling that make PLA forgiving in a shared space.

Where PLA+ and PETG fit

PLA+ is a tougher PLA blend that still prints nearly as easy as plain PLA, so it is the step up when a student part needs to survive a drop or a clamp. PETG is the choice for durable, water-resistant, or lightly functional parts, but it runs hotter, near a 240 to 260 C nozzle per the Polymaker PETG datasheet, and it strings more than PLA. Stock PETG in smaller amounts for the users who need its toughness, and keep PLA as the day-to-day spool.

Buying for volume

Buy filament on a price-per-kilo basis, not per spool, and standardize on 1.75 mm so any machine in the space can use the stock. A mid-grade PLA in 1 kg spools covers most of the demand, with a few rolls of PLA+ and PETG held back for the projects that need them. For true wholesale tiers and bulk pricing, the bulk 3D-printing filament page lays out the supplier programs.