Thin 15 B13VE-1697CA

Most $500 laptops are suitable for 3d modeling/printing. Generally, 3d modeling likes RAM. Most new laptops come standard with 16 GB, which is more than enough for a beginner/casual user. More RAM will benefit you; 32 GB is ideal. Most modern 3d modeling programs also benefit from a video card with

if it has a screen and a keyboard its good enough, i like some of the lower end msi laptops as they are upgradable, as for battery life most laptops will come in at around 4-8 hours of battery life depending on what exactly you are doing. i personally would recommend something like: MSI Thin 15 B13V