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  #1   Ban this user!
Old 12-05-2011, 05:02 PM
 
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first time mach3 post issue?

here is start of a post I made in madcam using mache inch post processor.

I used 0,0,0 for machine position before posting, and have my machine set at all 0's.

look at this gcode madcam gave me.... isn't z axis going to try and move + 7".269" before starting?

G00 G49 G40.1 G17 G80 G50 G90 G64
G20
(.25 Flat end Center cutting 4 flute HSS)
M6 T1
M03 S0
G01Z0.000
G00X1.076Y0.487
Z7.269
G01Z7.144 F
Y0.517Z7.138 F
X1.051Y0.543Z7.132
X1.006Z7.124
X0.980Y0.517Z7.118
Y0.473Z7.110
X1.006Y0.447Z7.104
X1.051Z7.096
X1.076Y0.473Z7.089
Y0.517Z7.082
X1.051Y0.543
X1.006
X0.980Y0.517
Y0.473
X1.006Y0.447
X1.051
X1.076Y0.473
Y0.517
X1.051Y0.543
X1.006
X0.980Y0.517
Y0.473
X1.006Y0.447
X1.051
X1.076Y0.473
Y0.517
X1.078Y0.525
X1.083Y0.531
X1.091Y0.536
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  #2  
Old 12-06-2011, 03:32 AM
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Have a look in one of the existing three M3-processors, make a post and see how they behave.
Why are you making a new one?
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Old 12-06-2011, 10:00 AM
 
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I used the existing Mach3 inch in madcam
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  #4  
Old 12-06-2011, 11:18 AM
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Is your part 0 at world 0 in Rhino?
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Old 12-06-2011, 12:07 PM
 
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yes, part is zeroed in rhino... at bottom of part
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Old 12-06-2011, 12:15 PM
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If you would be willing to e-mail me your file, and your post, I could take a look. My address is cncdanb@gmail.com.

Dan
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Old 12-06-2011, 12:25 PM
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Originally Posted by williamsmotower View Post
yes, part is zeroed in rhino... at bottom of part
Try zero at top of the part?
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Old 12-06-2011, 12:55 PM
 
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i emailed you the part and post Dan.

One thing I just noticed, i see that rhino isnt saving my settings for madcam. is there a trick to this... so everytime i open rhino it's already set-up?
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Old 12-06-2011, 01:35 PM
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Can you check what you sent me. I got the code, not the post, and the file didn't have any madCAM paths in it. It was just a simple cylinder.

Thanks,

Dan
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  #10  
Old 12-06-2011, 01:51 PM
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Sorry, I missed your question.

I always set up the options in 2 places. First, in the Rhino options, then with the options command in Rhino. It always sticks for me.

I'll attach a couple of screen shots.

Dan
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Old 12-06-2011, 06:06 PM
 
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I sent you a new email Dan, thanks again
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  #12  
Old 12-07-2011, 05:05 AM
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Can you take a screen shot of your post-processor window? I want to see if you are setting your home position Z value to 0. I suspect that your are. This is causing the tool to travel to 0 (which will smash into your material) then is traveling in the Z up to your very high safe clearance height.

G00 G49 G40.1 G17 G80 G50 G90 G64
G20
(.75 Flat end Center cutting 4 flute Carbide)
M6 T1
M03 S2000
G01Z0.000 <<<< this can be forced by changing the z home value
G00X-0.685Y-0.470
Z2.800 <<<< traveling back up to your super high safe clearance value
G01Z0.800 F60
X-0.683Y-0.457Z0.798 F60
X-0.686Y-0.427Z0.794
X-0.695Y-0.398Z0.790
X-0.710Y-0.372Z0.785
X-0.730Y-0.349Z0.781
X-0.754Y-0.330Z0.777

Take a look at that, and see if I'm on the right track. By default, madCAM should give you a value above the stock, so you might be shooting yourself in the foot if you are changing this. Of course, without seeing the post (not the code), I could be wrong. There may be issues with how the post is configured.

Dan
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