Coppercam: Vs Flatcam

Go with FlatCAM – it’s free, actively maintained, cross-platform, and produces superior G-code. Only fall back to CopperCAM if:

FlatCAM (now largely succeeded by FlatCAM 8.5 and the newer "FlatCAM-Electronics" fork) is an open-source application written in Python, using the PyQt framework. It is cross-platform (Win/Mac/Linux) natively.

Philosophy: "I am a data processing engine." FlatCAM treats PCB manufacturing as a geometric boolean problem. You load a Gerber, and you compute an isolation toolpath based on geometry, not visual selection. It is less flashy but mathematically robust.

#!/usr/bin/env python3
"""
copper_tool_wear.py
Usage: python copper_tool_wear.py input.nc output.nc --passes 3 --wear 0.01
"""
import argparse
import re
def apply_wear_compensation(gcode_lines, passes, wear_per_pass):
new_lines = []
current_pass = 0
for line in gcode_lines:
if line.startswith('(Pass') or (line.startswith(';Pass')):
match = re.search(r'(\d+)', line)
if match:
current_pass = int(match.group(1))
# Modify G-code lines with G01/G02/G03
if current_pass > 1 and ('G01' in line or 'G02' in line or 'G03' in line):
# Add wear compensation comment (actual comp in CAM)
new_lines.append(f';(Wear pass current_pass – comp wear_per_pass*(current_pass-1):.3fmm)\n')
new_lines.append(line)
return new_lines Coppercam Vs Flatcam
if name == 'main':
parser = argparse.ArgumentParser()
parser.add_argument('input')
parser.add_argument('output')
parser.add_argument('--passes', type=int, default=2)
parser.add_argument('--wear', type=float, default=0.01)
args = parser.parse_args()
with open(args.input) as f:
    original = f.readlines()
modified = apply_wear_compensation(original, args.passes, args.wear)
with open(args.output, 'w') as f:
    f.writelines(modified)
print(f"Wear compensation applied – saved to args.output")

Typical flow:

If you have ever tried to manufacture a printed circuit board at home using a CNC router (such as a 3018 or Genmitsu), you quickly realize that your Gerber files are useless to a milling machine. You need a middleman: CAM software.

For the hobbyist and small-scale professional, two names dominate the conversation: CopperCAM (developed by Gilles at LPKF) and FlatCAM (developed by Carsten Presser). Both claim to do the same job: convert Gerber/Excellon files into G-code. However, they go about it in radically different ways. Go with FlatCAM – it’s free, actively maintained,

Choosing the wrong software can lead to broken bits, short circuits, or hours of wasted time. In this deep dive, we will compare features, user interface, algorithm quality, cost, and workflow to help you decide which king of the engraver hill deserves a spot on your hard drive.

FlatCAM uses a "Shapely" geometry engine. When you run "Isolation Routing," you set a number of passes (e.g., 3 passes at 0.2mm steps). The software shrinks the copper polygon outward mathematically.

Winner: FlatCAM (FlatCAM wins by a landslide for reliability with complex modern boards). FlatCAM (now largely succeeded by FlatCAM 8

Every long-time CNC user has a CopperCAM horror story. Here are the three major fail states: