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Messages - rgsparber

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31
G-Code, CAD, and CAM discussions / Re: CAD/CAM Questions
« on: February 25, 2016, 08:16:20 AM »
I use Alibre PE, CamBam, and Mach3. Here is my work flow: http://rick.sparber.org/AGP.pdf

Rick

32
General Mach Discussion / My Mach3 Adventure, so far
« on: February 25, 2016, 07:32:02 AM »
Since I'm new to this forum, I thought I would offer my small selection of articles for member's amusement. I welcome questions and comments. If something is incorrect, I will fix it. Articles focus on my hardware, Mach3, CamBam, and Alibre PE. The last article in this group was recently refined by members of this forum with excellent results.

http://rick.sparber.org/ma.htm#13

Enjoy!

Rick

33
G-Code, CAD, and CAM discussions / Re: The Arc Command
« on: February 24, 2016, 05:02:11 PM »
If I may make a comment when you write gcode as an example it is always best to define teh values in teh normal format and order.  Yes it is OLD school AND some controller can ONLY take a certain format but it does read  much better in my opinion.

Now teh controller will load in Line elements in the order it was programmed to do so to IT order does not mean much But for reading purposes it makes it more clear.

You articles are very good by the way. And will be very helpful to new users.

G02 X0.000 Y0.000 I0.000 J0.000  F123

Instead of

G2 X0 Y0 I0 J0 F123

Just a thought, (;-) TP


Sorry I missed your suggestion. It is a good one and I will make the changes now.

Thanks,

Rick

34
G-Code, CAD, and CAM discussions / Re: The Arc Command
« on: February 24, 2016, 02:31:34 PM »
I continue to learn about arcs and now see that there is NOT a bug in Mach3 related to the XZ plane. See page 3 of http://rick.sparber.org/ARC.pdf for details.

Rick

35
G-Code, CAD, and CAM discussions / Re: The Arc Command
« on: February 23, 2016, 07:03:13 PM »
Hopefully I am moving closer to the truth. Here is the corrected text: http://rick.sparber.org/ARC.pdf

Thanks,

Rick

36
G-Code, CAD, and CAM discussions / Re: The Arc Command
« on: February 23, 2016, 04:59:44 PM »
OK, I have updated the article. Please let me know if I got anything wrong.

Thanks!

Rick

http://rick.sparber.org/ARC.pdf

37
G-Code, CAD, and CAM discussions / Re: The Arc Command
« on: February 23, 2016, 04:37:14 PM »
I'm a bit slow on the uptake, but now do understand the concept of Modal. I also proved to myself that with G90 and G91.1 in the same block, G90 causes Distance Mode to be set Absolute but then it is put back to the default value when Mach3 finds G91.1. Since my default values were Distance Mode: Absolute and IJ Mode: Incremental, it all worked for the wrong reason. I'm correctly the article now and will publish the update soon.

Thanks to all that helped me understand this bowl of spaghetti!

Rick

38
G-Code, CAD, and CAM discussions / Re: The Arc Command
« on: February 23, 2016, 01:08:38 PM »
Two things have me confused about the G90 and G91.1 commands. I see these parameters are set in Mach3 using Config|General Config... It is my understanding that these parameters are superseded by the G-code. So if I leave out either of these commands, wouldn't Mach3 just default to the Config page?

I'm also still confused about the difference between G90 and G91.1. It appears they do different things so are not in conflict. G90 is for axis movement. G91.1 is for IJK movement.

Help!

Rick

39
G-Code, CAD, and CAM discussions / Re: The Arc Command
« on: February 23, 2016, 10:11:13 AM »
The G90 followed by G91.1 was generated by CamBam and I assumed that it meant I was using absolute mode except for IJ where it is incremental. Is that wrong?

Rick

40
G-Code, CAD, and CAM discussions / The Arc Command
« on: February 23, 2016, 09:17:06 AM »
If you need to debug software generated G-code or create code by hand, understanding the arc command may be necessary. At first glance, it can be confusing. This article attempts to explain the arc command. It also documents an old Mach3 bug associated with drawing arcs on the XZ plane plus offers a work-around.

If you are interested, please see

http://rick.sparber.org/ARC.pdf


Thanks,

Rick

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