FlatCAM is a program specifically designed for preparing CNC jobs for making PCBs on a CNC router.
Understanding FlatCAM
At its core, FlatCAM serves as a crucial link in the process of creating Printed Circuit Boards (PCBs) using Computer Numerical Control (CNC) milling machines. It takes the design information from standard PCB CAD software and transforms it into instructions that a CNC router can understand and execute.
Key Functionality
Based on the provided information, a primary function of FlatCAM is highlighted:
- It can take a Gerber file generated by your favorite PCB CAD program, and create G-Code for Isolation routing.
This means you design your PCB layout in a separate CAD program (like KiCad, Eagle, etc.), which typically outputs industry-standard Gerber files (describing the copper layers, soldermask, silkscreen, etc.). FlatCAM then imports these Gerber files.
From the Gerber data, FlatCAM can calculate the paths the CNC tool needs to follow to cut away (isolate) the copper around the desired traces and pads on your PCB blank. These paths are then converted into G-Code, which is the standard language used to instruct CNC machines on movement, speed, depth, and other parameters.
Practical Use Cases
FlatCAM is particularly useful for hobbyists, makers, and small-scale prototype development where using a desktop CNC router is preferred over traditional chemical etching methods for creating PCBs. Its ability to generate G-Code for isolation routing is a key feature, allowing users to precisely mill the copper away to define the electrical connections.
This process simplifies the transition from a digital PCB design to a physical board ready for component assembly using a CNC router.
