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Messages - Tweakie.CNC

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3711
Quote
What is the correct way to ground the shielded cables?

There is no absolute 'correct way' but a method that works is...

Create a single point (star) earth tag at your controller end. This star should be connected to your incoming Earth. The shields of all screened cables should be connected to this star and those shields left unconnected at their other end. Any other components Earths should also be connected to this star point.
Do not create any Earth loops or GND loops - single point connection is the way to go.

Tweakie.

3712
General Mach Discussion / Re: plasma/mach3 line segments issue.
« on: March 07, 2016, 01:48:40 AM »
It appears that the post-processor you are using is creating the segmented curves. Perhaps there is post-processor available within your CAM software that supports arcs ??

Tweakie.

3713
Moved  ;)

Tweakie.

3714
General Mach Discussion / Re: Pictures to GCode?
« on: March 06, 2016, 08:11:36 AM »
Yes indeed sir, that pic. has been posted before ( perhaps in the impact engraving thread ).

I agree. In general, you get what you pay for with software and there are varying degrees of difficulty (especially with the free stuff) but there will always be new ideas or new processes which just have to be tried (I think I have produced a lot of scrap over the years but I hope that I will never loose enthusiasm). Once you have practiced with any software I am sure you can more of less guarantee that it comes out right first time but first time you use it well, who knows...
DotG, for example, is extremely slow but at the time it produced something which I don’t believe had ever been done before and perhaps it’s the same with Jason Dorie’s Halftoner and Reactor http://jasondorie.com/page_cnc.html - they all have their own merits and disadvantages.

It’s all a wonderful world of learning and experience out there and who knows what is just around the corner waiting to pounce.

Tweakie.

3715
General Mach Discussion / Re: Pictures to GCode?
« on: March 06, 2016, 07:10:07 AM »
Again, nice work Hood (nice car as well).

PhotoVCarve is one of the softwares that I have never actually tried. Perhaps one day  :)

If it's of any interest, this was produced with DotG.

Tweakie.

3716
General Mach Discussion / Re: Pictures to GCode?
« on: March 06, 2016, 06:32:45 AM »
Nice work Hood.

Another couple of free software’s you guy's may find worth trying are…

Dxf2gcode (the post processor for this is easy to modify, if necessary)
https://code.google.com/hosting/moved?project=dxf2gcode

DotG  (my good friend Zoltan & I translated the manuals for this into English)
http://dotg.weebly.com/download.html

Tweakie.

3717
General Mach Discussion / Re: Artsoft sold??
« on: March 06, 2016, 05:25:26 AM »
Hi Benny,

It has indeed been a while, welcome back  ;)

Tweakie.

3718
The problem is not related to Mach3, you need to contact the manufacturer of your controller to ask them why the step and direction signals for the B and C axes have not been made available.

Tweakie.

3719
My apologies to Sterling for following him around the forum but his diagram reminds me of Steel Nick’s excellent foam cutter design.

You just need to replace the hot-wire with a horizontal axis ??

Tweakie.

3720
Just rambling…

It’s probably way OTT for your application but I had a similar situation a while back and after much experimentation and thought settled on a system of using two stepper motors driving one axis through a differential gear arrangement. One motor (controlled by Mach) did all the work of driving the axis and the other motor (controlled by a plc driven by sensors) made the corrections.

Just something to think about, perhaps ?

Tweakie.

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