Mini HyperTherm/Spectrum 125c Toy - First impressions...

UPS just dropped of an HT 190c (the same as the Miller 125c). The unit
is light to me, fine for carrying one handed room to room. The
compressor is VERY quiet. The unit blows through 16 ga brass and
stainless. It cuts, in my twitchy hands, 1/8" aluminum at 6"/min just
fine. Very good cut. 1/8" steel at 10-12"/min great cut here too. 1/4"
steel at about 3"/min, knock off the slag, same quality cut. 3/8" steel
cuts at 1" to 1.5"/min. This is its true severance cut. You WILL need
to tap/rock the steel apart a very little when done, but it's a very
tig-able cut. 1/8" aluminum at 6"/minute is about all I'd be willing to
cut. The tip/shield tens to stick to aluminum, and the slower you go,
the more it sticks. 1/4" aluminum cuts at 1" to 1.5"/minute, but you
will have to rock the aluminum apart, and, with aluminum, it kind of
rips and, IMHO, the bottom 3/32" is unexpectedly bad/rough/uglyugly.
3/16" aluminum is probably (untested) the max aluminum thickness you
can just presto cut and weld. The torch is smaller than the 1250 torch,
but every bit as solid. The ground cable however is a thin spaghetti
thin speaker wire. It, however, is connected to the best small ground
clamp design I have seen yet anywhere. Weird, huh? The unit will run on
a 20 amp breaker, but will blow a 15 amp very frequently. Also, if it
has been a couple of minutes since you finished your last cut and
before using it the first time after you plug it in, you need to hit
the trigger (pointed safely away from body parts you are fond of) to
get the compressor to run before you begin cutting, otherwise, you'll
blow the breaker even if its a 30amp. Make sure its turned off before
plugging it in, or that will blow the 20amp breaker and arc to the plug
blackening it (this I found out trying my third outlet searching for
the ever elusive solitary 20amp branch...its in the kitchen after all).
It does have an appetite. However, the 20amp wouldn't blow during the
cutting of any thickness up to five minutes straight. I have a little
60lb generator I drilled out the throat jets on which should run this
just fine giving at least 23 amps at 120v since I pulled the tree
huggers out of the carburetor. I initially got it to cut 1/8" aluminum
sheets into thirds so they'll fit in my Civic, but it will take about 8
minutes for each 48" long cut. I suppose it's possible to put the
sheet on 4x4's in the parking lot and use the generator. 20.00/cut is a
bit much I think for shearing 1/8" aluminum.
Reply to
Ben Woodward
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I've got a picture of the 3/8" (actually .365 measured) cut at
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how the cut looks sloppy in camera. Must be the flash, eh?
Reply to
Ben Woodward
Same guts as the 125c I bought right? other than the cabinet. (Post below dated 03.09.05) Rob
(I hope so that's pretty kick ass cutting with a carry around- I never have air or electric lines together for some reason!)
Reply to
RDF
Hi Ben,
Can you give any more details on the generator mod? What make/model, etc.
Thanks, Tom
Reply to
Tm
It's here
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as far as the mod, I can't remember how I did it. I used a laser and carb cleaner to identify the passages. I figured it out as I went along. Keep in mind flow = Pi*r^2 ratios. Incease fuel flow by inceasing jet area 5%(or less) at a time only. I THINK, next to the main jet passage in the bottom of the carb , there is a restricted passage going at an angle into the idle circuit. Enlarge this holes area by 5%. The main jet area by 3%. You'll need a dremel wih a keyless dremel chuck, a steady hand, and the little drill set #61-80 sizes. I had to do it to keep it from surging at idle brand new out of the box This was the third generator in a row, the other two were freind's, that did that brand new. Misfiring and surging at idle must reduce emissions somehow. Too bad I never went for a degree in environmental engineering, it must be fascinating reading. In the meantime, while I can't eat fish (or really any seafood) anymore, the Rebuplicans are going to save the day by requiring US corporations to reduce their atmospheric emissions of mercury by 50% over the next 10 years to a meager 45 tons/year. But the Democrats will save us despite our guilty citizen-selves by sabotaging our generators. I sense brilliance at work here somehow. I met a priest the other day. I met a democrat the next day. Take a guess at which one believes more fervently in 'original sin'.
Reply to
Ben Woodward
Also, the kerf is so thin its invisible. Disconcerting, really. I use scuba tanks for air for my HT1250. 80 cu/ft costs 3.00 and lasts a while at 100 psi out of a modified oxygen regulator. They can be refilled at any scuba shop for 3 bucks. I maybe should have gone for the next size up. Same size/weight. And with double the output for a 20 amp draw, it would cut 4X faster. I could cut a 48" wide 1/8" Al sheet in 2 minutes (which is why I got it). Off the generator too. Just have to carry around a goofy looking scuba tank. I took the Miller speed specs and quadrupled them for Hypertherm, assuming the same performance ratio between the other Miller plasmas and Hypertherm I didn't realize untill after I got it that it WAS the Miller. Oh well. TG for Ebay.
Reply to
Ben Woodward
I can do the same thing with a $50 Makita sabre saw. In fact..I can do it faster.
Sometimes I think folks try to get too fancy.
Gunner
Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats. H. L. Mencken
Reply to
Gunner
One can't always be working. Sometimes you've got to take timeout to play with the new toys.
Simon Shabtai Evan
Gunner wrote:
black flag, and begin slitting throats.
Reply to
Shabtai Evan
And faster still with a skilsaw.
Ned Simmons
Reply to
Ned Simmons
Depends on how many tooth per inch of the blades
Gunner
Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats. H. L. Mencken
Reply to
Gunner

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