Messages

601

General Mach Discussion / Re: CNC Engraving : F-Engrave

« on: February 25, 2015, 12:09:15 PM »

Just for reassurance, I use F-Engrave with Mach 3 (licensed) and it works fine.

602

General Mach Discussion / Lost Steps with backlash compensation

« on: February 23, 2015, 06:17:44 PM »

Just a point.  You have got the backlash settings matching the actual backlash?  If it doesn't it will cause symptoms which can be like lost steps.


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603

Show"N"Tell ( Your Machines) / Conect 121 cnc retrofit

« on: February 11, 2015, 05:31:58 PM »

Yes!


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604

General Mach Discussion / Single pulse capacitance sensor selection

« on: February 08, 2015, 04:15:01 PM »

Just made a sensor for my mill using an Allegro Microsystems Hall effect sensor, and an 820 ohm resistor, built on a scrap of strip board and potted in Araldite.  Easily senses a small Neodymium magnet about 3 mm dia x 2 mm glued to the face of the spindle pulley. 


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605

General Mach Discussion / suggestions needed for setting up tailstock stepper on lathe

« on: January 31, 2015, 06:19:35 PM »

As far as I know Mach3 Turn only supports 2 axes so I'm not sure how you can do this.


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606

Mach3 and G-Rex / Have issues with my X axis need troubleshooting help!

« on: January 30, 2015, 05:49:01 PM »

When I had a problem like this it was because a wire had come adrift between the breakout board and a stepper driver, resulting in all pulses looking like left pulses.  Check the wiring to the x driver very carefully.


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607

General Mach Discussion / help of wiring this

« on: January 23, 2015, 03:42:58 PM »

That might work, it has a 0-5v control input.


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608

General Mach Discussion / help of wiring this

« on: January 22, 2015, 05:04:28 PM »

I don't think this will work I'm afraid.  This motor driver needs a PWM signal at a fairly high frequency, they say up to 10 kHz, to drive it.  This would normally be generated by the Arduino computer that it is designed to go with.  The recommended Mach 3 PWM signal is normally around 25 Hz and is designed to be smoothed to a variable dc voltage typically between 0 and 10 volts depending on mark/space ratio, which is compatible with standard motor speed controllers such as VFDs.  You can run Mach with a higher PWM frequency but the speed control would be very coarse.


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609

General Mach Discussion / Converting STL files to G-Code. Why?

« on: December 28, 2014, 10:31:51 AM »

Try http://pycam.sourceforge.net


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610

General Mach Discussion / Converting STL files to G-Code. Why?

« on: December 26, 2014, 04:17:06 PM »

http://blog.cnccookbook.com/2014/11/10/secrets-going-cad-image-dxf-stl-gcode-cnc-3d-printing/


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