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  1. https://www.harborfreight.com/propane-torch-with-t...

    https://www.harborfreight.com/propane-torch-with-three-burners-91899.html + one propane tank. Not a Sievert, but a significant step up from a hand-held torch.
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    There's about 20 for metal polishing... ...

    There's about 20 for metal polishing... Different ones for different metals.

    I loathe Luxi - I don't feel it gives a good finish and I find it no easier to remove than any other polish.

    As for...
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    I suppose I could glue a leather pad to a blunt...

    I suppose I could glue a leather pad to a blunt blade for my multitool and coat it with polish for flat surfaces. A bit unwieldy though.

    There's a massive assortment of compounds out there -...
  4. I'd be inclined to use my Sievert (fuel/air) with...

    I'd be inclined to use my Sievert (fuel/air) with a decent size tip or the Flamefast (fuel/compressed air). I'd still try to box it in though.
    I think I've got that Bernzomatic somewhere.

    As...
  5. Looking at pictures of the torch, I'd be...

    Looking at pictures of the torch, I'd be surprised if it puts out enough heat to do the job. You can help it along by boxing things in with soft firebricks, but I don't think it'll be enough.
    How...
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    The thicker the metal the more you need to use to...

    The thicker the metal the more you need to use to account for the thickness.
    What formula are you using?

    12198
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    Granted, but it's easier to point people towards...

    Granted, but it's easier to point people towards his comments on the damage silver dips do than it is to point them towards various theses & micrographs which show the damage.
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    Amber isn't a good one to put in ultrasonics (as...

    Amber isn't a good one to put in ultrasonics (as with all organics).
    As for silver dip... Have a look online for what Jeff Herman has to say about the stuff. I no longer use it at all.
  9. Thread: Re tempering

    by ps_bond
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    225

    What's the pin made of? I doubt you'll be able...

    What's the pin made of? I doubt you'll be able to harden it with heat (critical temperature of steel is ~724C, but varies according the alloy); you might be able to work harden it carefully by...
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    I'm having a bit of a battle with naked edges in...

    I'm having a bit of a battle with naked edges in Rhino. Which possibly sounds more exciting than it is.
  11. Broadly, yes - but the forum language is English...

    Broadly, yes - but the forum language is English rather than Suomi so if you're genuinely interested in selling a few stones in your collection (rather than spamming the forum) then it would be...
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    What will happens if in case yous post things...

    What will happens if in case yous post things like that that have nothing to do with the forum subject?

    I'll give yous three guesses.
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    It's a bone of contention amongst a number that...

    It's a bone of contention amongst a number that the Assay Offices are taking this approach with GDPR - if you're lucky, someone might recognise it.

    Personally, I feel GDPR is a piece of poorly...
  14. Thread: New site

    by ps_bond
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    Well, as far as I know Cooksons don't ship to...

    Well, as far as I know Cooksons don't ship to India...
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    I've had the glaze on slow cookers craze before...

    I've had the glaze on slow cookers craze before now - once that happens, it's porous and will allow pickle through to the metal as well.
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    Hi John - is that...

    Hi John - is that https://www.gemologyonline.com/Forum/phpBB2/index.php ?

    I admit, the use of the USB cameras is a bodge when compared with a "proper" gemological scope; I could probably set up my...
  17. Thread: Hi all

    by ps_bond
    Replies
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    590

    It's worked. Can't tell much at that resolution,...

    It's worked. Can't tell much at that resolution, admittedly - are there really 20 baguettes per earring? Looks like probably 20 rounds, admittedly.
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    It's also a useful tool for photographing...

    It's also a useful tool for photographing gemstones (might need a light panel under it) and for showing customers what's wrong with their jewellery. I often use a loupe attached to my phone, but a...
  19. Thread: Hi all

    by ps_bond
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    590

    Not sure I'm completely following - but if you've...

    Not sure I'm completely following - but if you've got 20 stones the same than yes, I'd multiply the weight of 1 by 20 to give an approximate total carat weight. Noting that it is just an...
  20. Thread: Hi all

    by ps_bond
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    590

    Well, it doesn't actually measure weight for...

    Well, it doesn't actually measure weight for starters. It'll measure width(s)of the girdle & depth, which translates to an approximate weight for an ideal cut of that shape using look-up tables.
    ...
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    40mm (max) focal distance and 30fps is going to...

    40mm (max) focal distance and 30fps is going to be a bit frustrating, I suspect. Any time this type of thing surfaces as discussion in the engraving groups there's also the claims of image lag, but...
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    Got any links? I know of the Mini-Sonic (not...

    Got any links? I know of the Mini-Sonic (not that I can find all that much definitive data about it), but that's well below ultrasound levels (58ish Hz).
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    I haven't been able to find anything online about...

    I haven't been able to find anything online about the process, nor any similar.
    I'm aware of the use of abrasive media in a vibratory tumbler for parts finishing; that's used extensively on...
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    VIN are often stamped into chassis on Land...

    VIN are often stamped into chassis on Land Rovers, for example. ~3mm thick (or so we hope) mild steel - the plastic deformation of the metal is in the immediate area of the stamp, the depth of...
  25. Poll: I confess I rarely read all of the spammers posts...

    I confess I rarely read all of the spammers posts - there's a pattern they follow and thereafter I only need one confirmation.
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