Sturdy and Fast all Steel CNC , my first build

[Boyan Silyavski]

3 NM steppers from Zappautomation coupled with AM882 drivers , driven by 650w Toroidal Psu at 70VDC / 2×50v rectified by power regulator board with 4 big capacitors that gives 70VDC at the output/.
Old Dell PC 2.8Ghz with 512 Ram, stripped reworked and hacked to be extremely light and fast + stable version of Windows Server 2003, 25khz Mach3, 1/8 microstepping, 4.2A motor selected by jumpers on AM882.
Deflection at any part of the machine at any direction less than 0.00mm under 100kg load/me/
20t HTD 5M Pulleys, 270mm belts 15mm wide. 1610 screws on all axis, 1605 on Z, 1:1,
Velocity 10m per minute,acceleration 800 at the motor tuning in Mach 3.
Temperature of motors at X and A 55 Celsius, at Y and Z 35 Celsius, when here 30 Celsius.