Desktop cnc for fabricating PCB

• Y axis zero points difference 0.816
• Reference point X coordinate 7.03
• Reference point Y coordinate 72.04
• Z offset -12.96
• Contour milling Z offset -11.1

Insulation Milling Setting

• Insulation Milling (Two Path 0.2-0.5mm bit)
• Tool Diameter 0.255mm
• Tool Speed 1390us
• Feed X and Y axes 1000.0 mm/min
• Feed Z axis 200.0 mm/min
• Arcs 30%
• Additional passes Count 2

• Insulation Milling (One Path 0.1-0.15mm bit)
• Tool Diameter 0.18mm
• Speed 1390us
• Feed X and Y axes 250.0 mm/min
• Z axis 200.0 mm/min
• Arcs 100%
• Additional passes Count 0

Predefined locations

• Far away: 0.0 225.0 0.0
• Tool change: 0.0 0.0 0.0

Milling Order

• Bottom → Top → Drill → Contour

Cad Setting

• Standard (most wires): 0.024“ = 0.6096 mm
• Narrow spaces: 0.016” = 0.4064 mm
• Between DIP pins (0.100“ pad spacing): 0.012” = 0.3048 mm
• Do not use default 0.010“ traces = 0.254 millimeters

N/C Drill: 0.6mm, 1.1mm, 1.2mm, 1.8mm, 3mm

Reference

• http://cirqwizard.org/docs/intro.html
• http://makerspace.engr.utexas.edu/wiki/index.php/Desktop_2D_CNC_Machines_for_Fabricating_PCBs
• http://cirqoid.com/blogs/ideas/17845932-cirqoid-blogging-again-laser-range-finder-with-tft-display