Cheap CNC: https://amzn.to/3tN4CRM
IndyMill: https://indystry.cc/indymill
Dremel CNC: https://www.instructables.com/DIY3D...

3018 CNC is probably the most inexpensive machine you can buy. Surprisingly with proper settings and materials, you can achieve really nice results! Sure, it's not the fastest CNC machine but definitely a great inexpensive learning tool for beginners.

Pyramid milling bit: https://amzn.to/40fI9bZ
Wood bit: https://amzn.to/46OsMd1
Acrylic bit: https://amzn.to/3Mit8kb
My 3D Printer: https://amzn.to/49aAD6i
Fusion 360: https://www.autodesk.com/products/fus...

Feedrate and depth of cut per pass:
Wood engraving: 500mm/min, 1mm
Wooden tray: 500mm/min, 1mm
Plywood: 400mm/min, 1mm
Acrylic engraving: 600mm/min, 1mm
Acrylic contour: 1000mm/min, 0.5mm
PCB: 300mm/min, 0.12mm and 0.6 for the contour