FDM
Fused deposition modeling, also known as fused filament fabrication (FFF), is the most widely used type of 3D printing at the consumer level.
G-Code
G-code is the programming language used to control CNC machinery. ... G-code makes CNC machines consistent to program and flexible,
able to produce different parts. As a CNC machine runs, the code is displayed on the operator's monitor and is seen scrolling along,
being read and acted upon by the machine.
OBJ
An OBJ file is a standard 3D image format that can be exported and opened by various 3D image editing programs.
It contains a three-dimensional object, which includes 3D coordinates, texture maps, polygonal faces, and other object information.
OBJ files may also store references to one or more
STL
An STL (Standard Tessellation Language or STereoLithography) file is a format that
describes surface geometry of a 3D object without any colour, texture or other attributes.
This format uses a series of linked triangles to recreate or reproduce surface geometry of the 3D model