ABS and PLA are the two most common types of filament used in 3D printing. They are both Thermoplastics, which means they become malleable when heated and can, therefore, be used to make different shapes ie 3D printing.

ABS is an oil based strong plastic often used for construction type things eg: car parts, lego blocks etc.

PLA is made from organic material such as cornstarch and sugarcane and therefore is safer to use for things like cookie cutters. 

The organic nature of PLA makes it biodegradable. ABS is not biodegradable but it is recyclable.

When it comes to ABS versus PLA however in printing it depends on the job you need doing. ABS has a higher melting point than PLA which makes it sturdier, however, this does mean that ABS prints need to be printed on a heated bed to avoid warping when the plastic cools. PLA creates a smoother and shinier print than ABS due to its lower melting point, this, however, can lead to warping when left in warm environments.

ABS often has a more chemical smell associated with it whereas PLA gives off little to no smell when printing.

Overall some good rules of thumb:

• If you need strength, thermal stability and hardiness ABS is your best bet.
• ABS may be stronger however it can be harder to print with.
• PLA is ideal where aesthetics is important as it is easier to print with and better suited for fine details.

Temperature	PLA	ABS
Print bed temperature	20-60°C (optional)	80-110°C (mandatory)
Printing temperature	180-230°C	210-250°C