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  1. Replies
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    They are wonderful tools - but there's little...

    They are wonderful tools - but there's little point my getting into a Ferrari when I needed to relearn how to change gear :)
    (I'm back to using my Airgraver since I did that practice plate)
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    As part of my general rehabilitation & improving...

    As part of my general rehabilitation & improving hand/eye coordination, I've been rebuilding my engraving skills; these were done with hand push only. Onglette & flat for the leaf patterns (3-4mm...
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    Aero eng turned software eng turned jeweller :)...

    Aero eng turned software eng turned jeweller :)
    Did a course as part of my degree learning machine tools, but I've long had an interest in first-principles tech, so fitting fits (argh) nicely.
    I...
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    FWIW, I'd use a scribing block to layout the cut....

    FWIW, I'd use a scribing block to layout the cut.

    https://www.warco.co.uk/marking-out-equipment-tools/337-surface-scribing-blocks.html
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    I *think* that it's one of the inkjet transfer...

    I *think* that it's one of the inkjet transfer methods rather than laser; I've never tried inkjet transfers. However, the link I gave you earlier details the use of Damar varnish; there's some...
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    I'd ask that we stick to English on this forum,...

    I'd ask that we stick to English on this forum, please. Google Translate isn't the most useful of tools at the best of times.
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    Cutting the pattern flat is easier initially, but...

    Cutting the pattern flat is easier initially, but can make the alignment of the ring more problematic; cutting the pattern with the ring rounded up makes for trickier sawing (but it's good practice),...
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    Could cast it, but by the time I'd drawn it up in...

    Could cast it, but by the time I'd drawn it up in CAD & printed it I could have made it. And if you're doing the work in wax, it's no worse in this case to do it in metal IMO.
    So for a one-off I'd...
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    I would probably scribe the design onto a length...

    I would probably scribe the design onto a length of flat sheet, bend up the ring, drill it to thread sawblades through and then pierce it, finishing the holes by filing. Alternatively, make up a...
  10. Thread: Optivisors

    by ps_bond
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    340

    Might be worth a go - I've got a fair few PCB...

    Might be worth a go - I've got a fair few PCB standoffs knocking about.
    The bruising round the eyes from leaning on a scope isn't a great look either...
  11. Thread: Optivisors

    by ps_bond
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    I drop the chair & put the bench pin up higher...

    I drop the chair & put the bench pin up higher when that's what I need, but for pitchbowl work it's less feasible - everything needs to be ergonomically placed.
  12. Thread: Optivisors

    by ps_bond
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    What's the focal distance like on the one you're...

    What's the focal distance like on the one you're using, Dennis?
    I like the 2.5x Optivisor, but... I have to be very careful about posture given the short focal distance - it's not good to hunch...
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    I know some people have said that toner transfer...

    I know some people have said that toner transfer is very machine dependent, but I've not had any issues with any laser printer or similar copier when using acetone-based nail polish remover (the...
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    Moved it, merged it, changed the title. Not that...

    Moved it, merged it, changed the title.
    Not that it helps with a solution admittedly...

    It looks like a variant on a box clasp?
    Would a toggle clasp work for you? I see Cooksons have some...
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    The other self-study option that I forgot to...

    The other self-study option that I forgot to mention is the Alan Revere book, Professional Stonesetting.
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    The problem there - for me anyway - is that the...

    The problem there - for me anyway - is that the good ones I know are all targeted at trade, so they're during working hours. There's occasionally courses at West Dean (none recently as far as I...
  17. 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 -...
  20. 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...
  21. 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.
  25. Thread: Re tempering

    by ps_bond
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    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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