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Old 08-20-2005, 11:06 AM   #1 (permalink)
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Anyone with experience of this plasma?

Seems very good from the numbers, but experience is worth everything. If noone has anything bad to say I'll but one middle of next week.

http://www.parkermetalworking.com/

Tobias
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Old 08-20-2005, 12:54 PM   #2 (permalink)
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that seems to good to be true plasma and tig in one package for $1500 i think someone with some money to burn should buy one and let us know how good it really is. Any takers???
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Old 08-20-2005, 01:42 PM   #3 (permalink)
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Quote:
Originally Posted by thelbz
that seems to good to be true plasma and tig in one package for $1500 i think someone with some money to burn should buy one and let us know how good it really is. Any takers???
I'd like to say something about this...since I'm in the plasma industry. Granted I'm no EE but I ran this by one of the EE's at work and here is what he had to say:

"Desigining a plasma cutter is easy...I could build you one out of a stick welder and a ignition coil, but that is just a basic transformer machine. Inverters are trickier...you could hack together an inverter that would do the job well but be a shit machine... Inverters are very noisy in electrical terms, they backfeed a lot of noise into the mains which causes all sorts of problems to sensitive equipment on the line. I takes a lot of R&D to kill all the noise the machine puts out. I'm guessing that these machines backfeed a whole ton of noise.

Something else that most people don't consider is consumable life, more expensive machines have complex control circuits that get as much life of the electrode and tip...most of the cheaper machines that I take apart are very primative in this area. So, you end up spending more on consumables compared to a more expensive machine."
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Old 08-20-2005, 01:47 PM   #4 (permalink)
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hi goat

that noise, how does that affect me?

i mean, why should i care about noise?

thx
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Old 08-20-2005, 03:44 PM   #5 (permalink)
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Quote:
Originally Posted by sid
hi goat

that noise, how does that affect me?

i mean, why should i care about noise?

thx
sid
Well, noise does a number of things. It can f*** with computers and electronics, cause flicker and annoy artifacts in flurenscent lights, but mostly it drops the PF in your line so your electric bill goes up. Transformers also don't like switching noise...so the transformer on your power pole isn't going to be happy.

Also, the bit about that cutter being compatible with cnc is bullshit. Those machines run an RF pilot arc starter which generates so much interference that your motors and cnc computer will not work.
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Old 08-20-2005, 03:50 PM   #6 (permalink)
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Quote:
Originally Posted by sid
hi goat

that noise, how does that affect me?

i mean, why should i care about noise?

thx
sid
Your computer,TV,radios might care,maybe even your telephone. If that backfeeds enough the filters in the power supplies don't remove it,you'll hear it. I'm not sure if it could actally damage something.
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Old 08-22-2005, 02:32 PM   #7 (permalink)
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Goat,

Which plasmas do you like?
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Old 08-22-2005, 04:53 PM   #8 (permalink)
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Goat,

Which plasmas do you like?
I can't answer that question...I'm bais, since I work for a PAC manufacturer
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Old 08-23-2005, 11:17 PM   #9 (permalink)
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So apart from risk of power line noise, based on a general discussion, not experience with this machine. I appreciate it!
Can anyone who actually has seen it run in person give some input? Does the machine hold up to hobby use? Problems with reliability?

Tobias
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Old 09-11-2005, 09:11 PM   #10 (permalink)
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Well I got ahead and bought same machine, different name and colout from another Ebay vendor.
$649 shipped to Indiana.
Tried it out in Indiana yesterday and it cut 1/4" well and 3/8 slowly and ugly, bu it cut it!

Will bring it home to Sweden tomorrow for further testing.
Hopefully not destructive testing

Tobias
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Old 09-13-2005, 06:56 AM   #11 (permalink)
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I'll attest to its working-the wounds are finally healing! No more plasma cutting in shorts. At least I had real shoes on, not the sandals Tobbjo had

As for the noise, given the duty cycle most of us will see with such a machine, I'd not think the noise, power failure reduction and transformer complaints would be of concern. If one were running a plasma 8 hrs/day, 5, 6, or 7 days a week, this might be of concern, and if it were enough of a concern, perhaps the power company could be engaged to add some capacitors to the incoming line to absorb and consume some of the noise.

Peace,
PT
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Old 09-13-2005, 08:35 AM   #12 (permalink)
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I'll attest to its working-the wounds are finally healing! No more plasma cutting in shorts. At least I had real shoes on, not the sandals Tobbjo had

Peace,
PT
PT, you are such a wuss... you KNOW shopgirl digs scars......
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Old 09-13-2005, 10:09 AM   #13 (permalink)
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PT, you are such a wuss... you KNOW shopgirl digs scars......
In spite of my somewhat less than savory habits, I heal well and don't scar much at all. Our tatooist client says I'm a perfect candidate for tattooing due to this.

Cuts I don't mind. Burns are painful. Between Tobjo's plasma and welding a Y-pipe back together, I've got some painful burns on my ankles-shoes hurt!
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Old 09-13-2005, 11:05 AM   #14 (permalink)
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Now I've hooked it up here at home with our 230V 50Hz single phase power. Works just as great as on PT's 60Hz.
Cuts 10mm, with slow speed and jagged edges.
3-4 mm reasonably clean, I think I'm hindering more than the machine.
40Amps draws 23A@230V and that makes my 10A fuses expire after about 5" in 10mm stell plate ;-)
Will upgrade the fuses for this.

Even at that current draw, much more than we are used to in Sweden, there is no evidence of lights flickering or other bad effects.
The 150A sindle phase 230V MIG welder I had some years ago made the lights inside flicker...
i assume the plasma draws a more even durrent than the spattering of a single phase MIG.

Tobias
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Old 09-15-2005, 11:01 AM   #15 (permalink)
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For this threads completeness I add some final comments.
I tested a bit more extensively yesterday.

Apparently there are two different machines, but very similar, under the same name. One has 23A draw@40A output and one has 16A draw@40A output. Mine has 16A. Perhaps the other is an older design?

I hooked it up to my three phase outlet, through a three phaes to single phase adapter. These outlets are 16A, with thicker feed lines from power central.

The cut speed and quality was markedly better.

I cut out a header flange for friends Ford Escort 1.7 ltr in 10mm flat stock.

The cut quality still leaves something to be desired. Probably much because of operator. The waviness/leaning of the cut edge is definitley me not being used to the angle of the cut tip to the handle.

The manual says to adjust air pressure depending on thickness, but not if I should increase or decrease with thicker material.
I tried a bit higher pressure after a while and think it got better, but it could just as well only be me getting a bit more used to it.

No problem with duty cycle during this cut. But the session only lasted about 10-15 min.

The comments above about noise and power factor, the power factor is 0.93 so if that is a measurement of noise it should be good enough.

Still no sign of flicker or computer problems.

It's not a hypertherm, but at half the price to a HT380 and higher rating I'm still very satisfied.
When it dies, as I fully expect it to do within a few years, i will reassess whether to go for all out quality or another cheapo.

If no one has any questions I will write no more.

Tobias
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Old 09-16-2005, 08:48 AM   #16 (permalink)
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pics look like a combination of too fast, and dirty air. Free hand plasma is very hard to learn. It's been a couple of years now for me, and i still suck...

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Old 09-16-2005, 04:34 PM   #17 (permalink)
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I suggest you speed up travel or turn down the amperage. That piece looks like it was torch cut rather than plasma.
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Old 09-16-2005, 05:45 PM   #18 (permalink)
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for that $ hypertherm 600 is the only way to go
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Old 09-17-2005, 10:37 AM   #19 (permalink)
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I've got a hypertherm powermax 380. Cut quality says it all for me. That was the main reason for buying a plasma in the first place? Tose look like they were gnawed through. I dont mean to offend, but is that the cut you want your brand new plasma making?
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Old 09-17-2005, 11:08 AM   #20 (permalink)
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Well, thanks for the input, guys. As I said this was more or less the forst try with my plasma, at 10mm, slightly mor ethan 3/8"
I bought it for sheet, up to about 4-5mm, which is upp to 3/16" for those not into metric

No, this was not the quality I wanted, but I had not really expected it to cut 10mm this easily at all, much less with any quality.
In some places the quality is acceptable, so I still think that the machine is capable of better and it's me that is the limiting factor.
I've rented a Hypertherm 600 three days befor, ran it more or les 10h a day then, so i know what is possible. it didn't do to well in 10m either.

I'm not saying this machine beats the Hypertherm, not by a long shot, but at one third of the price, for me it was not a question of hypertherm or Mitec, it was mitec or nothing. For the same price as a hypertherm I got a plasma, a bender and a truetrac+axles for my rear axles.

So for a cheap bastard it was a lot of bang for my bucks, and I'm all for function before form, so appearence is for wussies anyway

Kepp the feedback on my performance/lack of proficiency about the use of this fab(o
lous) tool coming!

Tobias
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Old 09-17-2005, 01:45 PM   #21 (permalink)
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no offense but i could of cut a better header flange with a cutting torch and would only have to use some sand paper to clean up the cut. And whats this about getting used to a plasma the first time I used one was on some 5/8" plate and had no problems at all the cut looked great but that was with a thermal dynamics unit and the air wasnt verry clean. But if thats all you could afford then i guess its a good buy but just think of all the propane you could buy for a torch for what u paid for that plasma.. Just my .02
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