Building and Testing the DMC2 Mini Benchtop CNC Mill - A Complete Assembly Guide

Follow along with a detailed video tutorial demonstrating the complete assembly and testing process of a professional-grade benchtop CNC mill kit featuring a 3HP spindle, flood coolant system, and precision ball screws. Learn the step-by-step construction process spanning over 50 hours, including frame assembly, installation of ball screws and linear rails, setting up the axis systems, configuring electronics, and implementing crucial features like the work offset probe and lubrication systems. Watch real-world testing and troubleshooting of the machine's capabilities through various machining operations in aluminum and stainless steel, while discovering solutions for common issues like backlash and component upgrades. Master essential calibration techniques, workholding strategies, and precision measurements to achieve optimal performance from a budget-friendly professional milling solution.

Syllabus

00:00 – Introduction
03:37 – Assembly
04:23 – Frame
08:37 – Ball Screws and Linear Rails
13:20 – Double nut
14:04 – Y-Axis Table
15:38 – X-Axis Gantry
16:14 – Z-Axis
17:40 – Gantry Tramming
18:00 – Lubrication Lines
18:55 – Enclosure Basin
23:14 – Work Offset Probe
24:14 – Motors
24:07 – Spindle
26:19 – Enclosure Front Cover
26:42 – Electronics
32:25 – First Movements
34:20 – Backlash and Alignment
36:45 – Workholding
37:29 – Calibrating Probes
38:18 – One Shot Oiler
38:47 – Flood Coolant
40:02 – Calibration part
48:26 – Accuracy
50:07 – Machining New Feet
52:45 – Machining New X-Axis Motor Mount
58:59 – Machining Stainless Steel Gear