Handle your prints safely
Safety protocols and material-handling guidance for 3D printed objects — temperatures, food contact, disposal and the limits of printed parts.
Ventilation & fumes
PLA and PETG emit minimal fumes and are fine in a normal room. ABS and ASA release styrene — print them in a ventilated space or an enclosure with HEPA/carbon filtration (every machine on our farm runs filtered). Never print any filament directly over a bed you sleep in; if you can smell the print strongly, add airflow.
Resin handling
Uncured resin is a skin irritant. Our resin parts are washed and fully post-cured before dispatch, but if you handle raw resin yourself: nitrile gloves, eye protection, and never pour monomer down a drain — cure it and bin it.
Food safety
FDM prints are not food-safe as-printed — layer lines harbour bacteria. If a part will touch food, use a food-safe epoxy sealant (or request our sealed-and-smoothed finish), keep it below 60°C, and hand-wash only. Never use PLA for hot drinks.
Heat limits
Know your material's service temperature: PLA softens near 60°C (a hot car will warp it), PETG-CF handles ~80°C, ABS-GF ~95°C. Keep parts away from ovens, radiators, car dashboards in summer and direct sustained sunlight if they're PLA.
Mechanical limits
FDM parts are anisotropic — strong along layer lines, weaker across them. Don't use community-printed parts as safety-critical hardware (bike mounts, climbing gear, load hooks) without testing. Carbon-fibre filaments are abrasive and should not be sanded without a mask.
Disposal
PLA is plant-based and industrially compostable — most UK councils won't compost it, but it can be cleanly landfilled or recycled via specialist programmes. Failed prints make great re-grind. Never burn filament indoors.
Kids & pets
Small printed parts are choking hazards for children and pets — many are the exact size of kibble. Also keep TPU prints away from animals that chew; and note magnets (which we can insert on request) are extremely dangerous if swallowed.
Fire & machine safety
If you run your own printer: thermal runaway protection must be enabled, smoke alarms belong near your print area, and long unattended prints need a fire- aware plan (camera check-in, or our live cam page for farm jobs). Never leave a printer with a frayed cable or cracked bed.
Safety question we haven't covered?
If a material question affects your project, tell us in the order brief and we'll confirm the right handling before it prints — or ask in the forum and the community will chip in.