PLA 3D printing
PLA is where most of my jobs start. If you have a file and aren't sure which plastic to pick, this is usually the right answer — and if it isn't, I'll tell you before I print.
What PLA is
PLA is a hard plastic made from plants, usually corn starch or sugar cane. It's the same stuff as the compostable forks and cups you sometimes get at a food stall.
It's the easiest plastic to print well. That makes it my cheapest option, and it's why it keeps sharp edges and small details that tougher plastics tend to soften.
What I'd print in PLA
Anything that mostly sits still and gets looked at: figures, scale models, cosplay props, desk organizers, plant pots, wall hooks, cable clips, and first drafts of a part you're still designing.
It's also a good first try for a part you'll later make in something tougher. You can check the fit and the size for less, then switch once the shape is right.
Where PLA falls short
PLA is stiff, not tough. Drop it on a tile floor or bend it hard and it's more likely to snap than to give. For clips, hinges, or anything that gets knocked around, pick PETG.
It also can't take real heat. A part on a car dashboard, next to a radiator, or inside a warm device box can slowly bend out of shape. For those, choose ABS / ASA.
If the part needs to squash, grip, or bend like rubber, none of the hard plastics will do — that's a job for TPU.
Finish, heat and outdoor use
Prints come out with a gentle matte surface, so the fine lines from each printed layer are easy to miss. Paint and glue stick to it well if you want to finish a model yourself.
Keep it out of hot cars and away from anything that gets hotter than a sunny windowsill. In a normal room it'll keep its shape for years.
For a garden marker or a shaded outdoor bracket it's worth trying — it has held up outside for me longer than you might expect. For a part that must survive years of full sun, ASA is the safer choice.
PLA
How it holds up
- black
- white
- cyan
- yellow
- magenta
- green
Parts I've printed in it
Questions people ask
- Is PLA strong enough for a functional part?
- For light, steady loads, yes — a shelf bracket, a hook, a holder that just sits there. It's weaker when a part gets hit, bent, or loaded for a long time. If yours will take knocks, I'd go with PETG; tell me what it does and I'll say which fits.
- Can I leave a PLA part in my car?
- I wouldn't. On a warm day the inside of a parked car gets hot enough to soften PLA, and phone mounts and dashboard parts are the classic casualties. ABS / ASA is the one that copes.
- Is PLA food safe?
- For kitchen helpers, yes — a coffee-bean scoop, a bag clip, a utensil holder. I use parts like that at home myself. I don't sell prints as certified food safe, though. The tiny grooves between printed layers can't be cleaned properly, so skip anything you eat or drink from, like spoons or cups. PLA also softens with heat, so wash it by hand in warm water, not hot, and keep it out of the dishwasher.
- Can I paint or sand PLA?
- Yes. It sands easily and takes acrylic paint and primer well, which is why a lot of model and prop makers prefer it. Sand gently by hand, because a power sander can heat it up and smear the surface.