Group 2

Jarni, Benedik, Richard

DIY CNC mill

Design desicion

standart PCB sizes:

• metric: 150mm*100mm
• imperial: 127,38mm*102mm (5inch * 4inch)

material goals:

1. PCB milling very precise 0,4mm traces
2. engrave stone soft limestone

work table (fixed)

• 160mm*120mm
• 15mm? height

outer diamensions: (might change based on final design)

• 350mm width
• 300mm depth
• ? height

Machine bed (work table):

• uper bed: (waste board)
  • HDF/MDF
• lower bed: steel or aluminium
  • connect upper bed and lower bed with screws

Y-Axis:

X-Axis:

Frame:

• vertical: 60*30 extrusion
• horizontal: 30*30 extrusion
• additional support by steel wires for structural regidity

idea list:

component list: mechanical structural: - alu extrusion 20*20 moving: - 2x 8mm leadscrews with brass nuts - 4x 8mm guide rails - electrical: mechatronic: manufacturing methods:

• milling parts

Links:

• https://marlinfw.org/

• design decicions: