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Author Topic: Holes don't align to center X-axis  (Read 2894 times)

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Holes don't align to center X-axis
« on: February 18, 2014, 04:11:05 AM »
Hi!
 I'am new into plasma cutting. I've managed to get a couple of
 decent cuts, but also a whole bunch of bad ones.
 At the moment i struggle with a strange problem.
 When i try to cut a 200mm shape with two holes in it on both ends
 the holes don't align to center on the x-axis. About 2 mm wrong.
 I've tried this piece four times with the exact same result. Also tried another
 one with the exact same problem.
 The shape and hole dimensions do match the cad , but i'd like to have them centered as drawn
 The holes are round and the shape it self looks fine.

 Iam using:
 * Sheetcam
 * Mach3

 Any ideas what's going on here?

 Best regards

Offline Hood

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Re: Holes don't align to center X-axis
« Reply #1 on: February 18, 2014, 06:35:49 AM »
Post your code and xml and I will have a look.
Hood
Re: Holes don't align to center X-axis
« Reply #2 on: February 18, 2014, 12:18:58 PM »
Hi and than's for your reply.
Here's my files.
Re: Holes don't align to center X-axis
« Reply #3 on: February 18, 2014, 12:20:53 PM »
More
Re: Holes don't align to center X-axis
« Reply #4 on: February 18, 2014, 12:21:51 PM »
More...
Re: Holes don't align to center X-axis
« Reply #5 on: February 18, 2014, 12:22:39 PM »
And a Picture of the problem

Offline Hood

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Re: Holes don't align to center X-axis
« Reply #6 on: February 18, 2014, 03:32:23 PM »
Your code and xml seem to be fine from a quick look. Your accel in motor tuning is quite high though, can you reduce that by 50% and see if you still get the issue.
Hood
Re: Holes don't align to center X-axis
« Reply #7 on: February 19, 2014, 02:59:04 AM »
Hi again!
Thank's for your reply.

I've tested some more, turns out that this problem only occurs when using the torch.
With a pen, all moved fine. So it seems like i have some interference problems when torch is firing.
I noticed that the wiring for Z axis limit and Z axis "safety" were unshielded so i removed them yesterday, i'll do some test cut's tonight.

Offline Fastest1

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Holes don't align to center X-axis
« Reply #8 on: February 19, 2014, 08:25:13 AM »
From my readings here. Noise/interference is a real issue for plasma tables. Practice the best wiring techniques.
I want to die in my sleep like my grandfather, not like the passengers in the car! :-)