My Newb Plasma Table Attempted Build

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19 May 2020 12:53 #168266 by dvn4life1972
Ah well about that lol...I got lost trying to figure out how to use halscope.

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19 May 2020 12:58 #168267 by phillc54
There is a bit of a tutorial that may be of help.

linuxcnc.org/docs/html/hal/tutorial.html#_halscope
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19 May 2020 19:54 #168293 by dvn4life1972
I cut out several parts and followed that link to the instructions for halscope. I just can't get the dang thing to sample right or something. Also I don't have a signal listed for plasmac.axis z (the others are there). Halscope ran but I have no idea what the hell it's up to. I give up at this point.

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19 May 2020 21:35 #168301 by rodw
Until you get the hang of halscope, just set it to normal and roll up the top right. Also you have to scale things right or they will be to big to fit on the screen. Start with the vertical scale to be 50/div so to vertical lines will be 100 volts. Sometimes 20/div will also fit in. as far as the horizontal goes, 200 ms/div is a good setting.
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19 May 2020 23:09 #168313 by phillc54

I cut out several parts and followed that link to the instructions for halscope. I just can't get the dang thing to sample right or something. Also I don't have a signal listed for plasmac.axis z (the others are there). Halscope ran but I have no idea what the hell it's up to. I give up at this point.

It is worthwhile perservering with it.
You could use plasmac.offset-current rather than plasmac.axis-z-position it will still let us know what the axis is supposed to be doing.
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19 May 2020 23:21 #168314 by dvn4life1972
You guys are always great. I fully believe it's something I've done and/or something I'm doing wrong. Since my post of frustration earlier I've cut some more parts and used THC (haha).

It seems the faster the cut, on the longer cuts because that's when it flips out, the less it acts strange. I cut the same parts from some 16ga (was cutting from 10ga) at 230ipm and the THC seemed to work very well. So, I went back to 10ga and slower speed of 130ipm and towards the end if the border cut - the longest one - it slowly and continuously went upward.

I'm spent for the day. I'll give halscope another go tomorrow. I have some paying work stacking up now and it's 18ga and 20ga. I hope this crap gets resolved soon.

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19 May 2020 23:39 #168315 by phillc54
Are the cut feed rates you are using from the cut charts?

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19 May 2020 23:47 - 19 May 2020 23:48 #168316 by dvn4life1972
Well, sorta. I'm running 60A consumables and the chart doesn't have anything for 16ga. I'm going to pick up some fine cut consumables in the morning which will mean much slower speeds.

Wherever I've found info in the charts I've been at or very close to hypertherms recommendations.
Last edit: 19 May 2020 23:48 by dvn4life1972.

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19 May 2020 23:49 #168317 by phillc54
What machine is it and are you cutting at 60A?

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20 May 2020 00:40 #168321 by dvn4life1972
Hypertherm Powermax 1000 g3, and yes 60A.

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