Hawkes
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Post by Hawkes on Nov 18, 2010 22:16:51 GMT -4
When I saw the magnetic ground I thought about how crappy mine works, but also thought about you using clean steel. Hope it works out. Mine also just has the stud that you put the neg clamp on, wiring it direct like yours should be an improvement.
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Hawkes
Hardcore
Lurker
Posts: 5,404
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Post by Hawkes on Nov 18, 2010 22:43:19 GMT -4
Many warning not to clamp to the table. High Frequency plasma noise vs. motors and electronics. The grounding rules are well defined, you isolate the pc/drives/power supply/monitor to the Ac circuit in the wall. The table moving parts and plasma chassis are all into a 6' grounding rod to earth. So you have two grounding circuits to isolate the high frequency so your motors don't run crappy and the software communication is stable. The irony of isolated ground circuits. Electrical code doesn't allow 2 ground sources from one electrical service, ie: your service having a ground rod and your plasma circuit having it's own ground rod. Having 2 allows a difference of potential between the two grounded components. The instructions for connecting an isolated ground outlet say to do just that. Just don't put one hand on the table and the other on the metal electrical box that the computer is plugged into with bare feet standing on concrete If you have decent soil and a good ground it won't be a problem. I'd be leary anywhere there is little soil and lots of bedrock. easier terms: If one ground is weak and the other is strong there will be voltage across your body when you touch both. Where I live there is poor ground, we used to get a shock opening the freezer door while standing on concrete in bare feet. I measured 60 volts from the freezer handle to the concrete. The concrete was a better ground than my ground rods at the service. I had NSPI come out and check the grounds, I think they drove another rod at the pole.
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Post by theonlybull on Nov 18, 2010 22:57:01 GMT -4
funny you mention that paul, my tig requires a circut with it's own seperate ground.... not that it got it, but the book says it can damage eletrical equipment...
a difference in potential between the grounds...... about like grabbing the ground and the bare rod when your out in the rain...... or so i've been told......
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Creepy
Administrator
Dartmouth
Posts: 18,718
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Post by Creepy on Dec 2, 2010 12:40:22 GMT -4
tidied up the stainless swing out desk and made holes for the wires. bolted the smoked lexan to the desk, makes it a little easier to look at the arc. Removed the external mounts for the electronics and computer, and plasma, and put them all under the watertray. This involved a fair bit of wiring changes. i'm confident I will never cut thru the bottom of the water tray, but I didn't know when I first built the table if burning thru was a concern, so the water sensitive components all got mounted outside. This was about the time the HRM's stupid ass sewage plant flooded, with the PLC room under the waste tank. i could see the same thing happening. The computer was hating being in the swath of grinder dust coming from the vicinity of the vice, now it is somewhat more protected and has a filter over the intake. All the power buttons and plasma controls are easily accessable, they weren't before. Had to reach in behind the back corner. made a metal rack I gotta throw outside. Its for 4x4 sheets.
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Post by theonlybull on Dec 2, 2010 20:39:26 GMT -4
looks good.
add some 12-16" vertical peices between the uprights, and it makes it easier to sort by size if you want. that's how we do our 4x8 plate rack.....
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Creepy
Administrator
Dartmouth
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Post by Creepy on Dec 6, 2010 16:57:18 GMT -4
New circuit board in back from Texas, but stuck at the post office till tommorrow, should be cutting again by Wed. Another new software upgrade has just been released by Bend-Tech PRO, (toob bending software) called Sheet Metal. It is a CAD program for forming flat plate, with fast, easy, accurate tab, bend lines, and alignment slots. It adds as a module to Bend-Tech PRO. It will output flat .dxf's for Sheetcam, which in turn generates the code for the plasma table. So I will be able to much better design bumpers and brackets from folded plate all cut out as one on the plasma table. reducing welding, fabrication time, and therefore cost. ps: WOW, while i was wring this, the software developer called me and asked about my usage, like current software installed, what brand of CNC table and what sorts of parts I make. He wants feedback once I start using it. Now that is service. And on a different note, it's also why I don't pirate the software out to people who ask for it. I still can't believe that dude called me.
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Dugie
Jeeper
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Post by Dugie on Dec 6, 2010 17:04:54 GMT -4
That's awesome Jan! Good to hear you will be back up and running soon. Guess you won't be at coffee tomorrow, you will be cutting up a storm.
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Creepy
Administrator
Dartmouth
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Post by Creepy on Dec 6, 2010 17:24:42 GMT -4
Work tommorrow night, then off for 5. Storm starts wed. lol Friggin new software has arrived in my hotmail already, this rocks.
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Post by Cherokee Chief on Dec 6, 2010 18:18:56 GMT -4
About time you cleaned up that friggin messy shop. ;D Looks good Jan very professional looking.
Darren
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Creepy
Administrator
Dartmouth
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Post by Creepy on Dec 6, 2010 22:08:31 GMT -4
yeah, it really needed it. lol continuous improvment, my biggest project is my shop.
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Post by theonlybull on Dec 6, 2010 22:47:15 GMT -4
nothing beats the warm and fuzzy feeling you get from dealing with someone who actually cares eh.
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Post by itsakeeper on Dec 7, 2010 5:46:09 GMT -4
nothing beats the warm and fuzzy feeling you get from dealing with someone who actually cares eh. and that is rare in any business, nothin like great service
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Creepy
Administrator
Dartmouth
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Post by Creepy on Dec 9, 2010 2:46:04 GMT -4
got the dthc expansion module back. its an upgraded unit to use with a digital current probe. (cutting amps) its not as bad as it looks. just give it a couple of taps....... just kidding BBBBBBBZZZZ, gurgle gurgle mag. ground is working great. way easier. Welcome X12. Fundraiser for Citadel High. YJ shackillz for a CVO rig. Awesome, finally running again. I got some leftover pizza and off for 5 days.
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Creepy
Administrator
Dartmouth
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Post by Creepy on Dec 9, 2010 13:09:43 GMT -4
Got the Bend-tech 5.0 and SM installed in the house.....just heading out to install it in the shop.
I had a spot of trouble getting the software installed, called Cris at Bend-tech and he setup a link between our computers and fixed it for me. got an extra key file for the shop pc that doesn't have internet, you are allowed to have multiple computers as long as there is only one user, you don't have to buy additional licence.
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'Roach
Elite
InsurJeeper
...the man who decided to use torx on Jeeps should be beaten severely...
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Post by 'Roach on Dec 9, 2010 13:37:33 GMT -4
you are allowed to have multiple computers as long as there is only one user, you don't have to buy additional licence. Nice! We have somethng like 30 copies of CAD at work for 8 users working on different computers around the company
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