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PLA vs PETG: which material do you need?

Short answer: PLA for things that live indoors and need to look sharp, PETG for things that have to take a knock, some heat or the weather. Those two cover most jobs and are the standard materials here. The rest of this page explains the difference.

PLA compared with PETG
PLA PETG
Best for Indoor parts, models, prototypes, decor Functional parts, outdoors, cars, wet areas
Strength Stiff but can snap under impact Tougher, bends a little before it breaks
Heat Softens around 55 to 60°C, so not for a hot car Handles roughly 70 to 80°C
Sun and weather Fades and weakens outdoors Holds up better outside
Finish Crisp detail, matte or slight sheen Slightly glossy, a touch less crisp

What is PLA?

PLA (polylactic acid) is the most common 3D printing plastic. It prints with very clean detail and holds its shape well, which makes it good for models, prototypes, organisers and anything decorative. Its weakness is heat: it starts to soften at around 55 to 60°C, so a PLA part left on a car dashboard in a Perth summer can warp.

What is PETG?

PETG is a tougher plastic from the same family as drink bottles. It flexes a little before it breaks instead of snapping, copes with more heat, and lasts better outdoors and around water. That makes it the usual choice for brackets, clips, car interior parts, garden fittings and anything that does a job. The trade-off is a slightly glossier, less crisp surface.

What about ASA, TPU and other materials?

ASA is the material for parts that sit in full sun all day, because it resists UV and heat better than PETG. TPU is a flexible, rubbery material for seals, bumpers and grips. Both can be printed on request. They are not kept on the shelf, so they are ordered in and the quote includes the extra time.

Can I choose the colour?

Yes. Tell us the colour you want in your request. If it is not on the shelf it is ordered in, and the quote says so. Up to four colours can be combined in one print.

Are 3D printed parts food safe?

Nothing here is sold as food safe. Layer lines can trap bacteria and the colourants vary, so printed parts should not be used for food or drink contact.

Not sure which to pick? Describe the job in the form below and the right material is recommended in your quote.

Get a fixed quote

Tell us what you need and attach a photo, sketch or file if you have one. You get a fixed price back before anything is designed or printed.

Rather email? Send it to hello@paulosprints.com.au.

This is your sticky note.

Photos, sketches, STL, 3MF, STEP, OBJ or PDF. Bigger files can be emailed after we reply.