[Jewelry making - Article 00612] - Re: [Orchid] PUK 3 vs earlier versions

[Alberic]

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Hi Alex:

    I just picked up a PUK 3+ Pro. I don't know from the earlier
    versions, but the pro+ has more power than the standard 3, which has
    more power than the older Mk 2. For some of the heavy work I'm doing
    on sterling, the Pro+ has just barely enough power. I'm definitely
    still working the kinks out. I'll write up a review once I begin to
    think I've got a handle on it. 

    The things I can tell you so far: You want the microscope, and you
    want to use ultra-high purity argon. (Grade 5) Check with your argon
    supplier to see how much the high-grade argon will run. The
    industrial argon I was using for my existing inert gas rig ran me
    about $40/bottle. The list for the high-purity is $260/bottle.
    (serious premium for the hi-test argon.) Remember to factor this in
    to your run cost calculations. It ran on the industrial stuff, but
    it's much happier with hi-test. (I'm also doing a lot of titanium.
    Titanium cares. Deeply.) 

    The improved cycle time on the 3+ is definitely a good thing. The 3+
    cycles just about as fast as I can move my hand and retarget the tip.
    I don't find myself waiting for it to fire the way I suspect I would
    with an older model. THe 3+ fires slightly faster than once per
    second, while the older ones were more like once per 2-3 seconds, as
    I understand it. 

    Beyond that, I've had it since mid January, and I haven't really had
    time to sit down and mind-meld with it yet. There will be more info
    once I grok more fully. 

HTH
Brian Meek.
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