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Post by Pat on Jul 4, 2020 20:17:48 GMT -5
What’s it all about? I’ve read that it is for rings with stones, that it allows a safe place for the faceted stone culet while working on it.
Setting the stone in a ring would be the last thing I would do when making a ring with a stone in it.
Doesn’t make sense to me. If the culet is long enough to necessitate a groove, wouldn’t it poke a hole in your finger when you wore the ring?
Rio was no help, or I misunderstood. Can the RTHlings explain? Thanks.
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EricD
Cave Dweller
High in the Mountains
Member since November 2019
Posts: 1,142
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Post by EricD on Jul 4, 2020 21:41:24 GMT -5
That makes no sense to me Pat, but I assume some rings have such a large, deep stone to set that having it protrude through the ring it's self is better than having it stick way out? Our skin after all can take a little bit of abuse to make a fashion statement... "My stone is bigger than yours... ouch it's poking into me"
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Post by opalpyrexia on Jul 4, 2020 22:19:25 GMT -5
Here's a reasonable scenario. You're a bench jeweler in a shop and a customer brings in a ring for resizing. You grab your regular ring mandrel to measure it, but then you notice that the culet of the faceted stone appears to extend below its setting. It doesn't look like it's lower than the inner curve of the band itself, but rather than risk damaging the potentially fragile culet, to be safe you grab your grooved mandrel and measure the ring
If you don't work in a retail shop or offer ring resizing at a show, then I'd say that there's no reason to have one. Like the one I have, which I'll use to resize the head of any intruder who breaks into our home. Can't think of any other use.
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Post by Pat on Jul 4, 2020 22:31:27 GMT -5
Ok. That makes sense. Thanks. Other than resizing intruders, could it be used the same as an ungrooved plain mandrel?
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EricD
Cave Dweller
High in the Mountains
Member since November 2019
Posts: 1,142
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Post by EricD on Jul 4, 2020 23:10:50 GMT -5
Here's a reasonable scenario. You're a bench jeweler in a shop and a customer brings in a ring for resizing. You grab your regular ring mandrel to measure it, but then you notice that the culet of the faceted stone appears to extend below its setting. It doesn't look like it's lower than the inner curve of the band itself, but rather than risk damaging the potentially fragile culet, to be safe you grab your grooved mandrel and measure the ring
If you don't work in a retail shop or offer ring resizing at a show, then I'd say that there's no reason to have one. Like the one I have, which I'll use to resize the head of any intruder who breaks into our home. Can't think of any other use. I'll have to say I had a good extended chuckle
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Post by fernwood on Jul 5, 2020 5:02:28 GMT -5
Mine has a slight groove/flat spot. It is for placing the setting portion of the ring on. At times is more of a pain than it is worth. As mentioned above, the reasoning is for stones that protrude through the back of the setting.
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Post by opalpyrexia on Jul 5, 2020 9:46:28 GMT -5
Ok. That makes sense. Thanks. Other than resizing intruders, could it be used the same as an ungrooved plain mandrel?
For measuring rings, yes, but I suspect that tapping a ring down to a larger size on a grooved mandrel would be a little tricky to accomplish without scoring or distortion. I suppose it could be done carefully and gradually by rotating the ring a bit after each strike, but I've never done it.
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Post by Pat on Jul 5, 2020 9:52:45 GMT -5
opalpyrexia that's what I thought. Thanks for the explanations; now I understand.
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Post by fernwood on Jul 5, 2020 10:07:04 GMT -5
Ok. That makes sense. Thanks. Other than resizing intruders, could it be used the same as an ungrooved plain mandrel?
For measuring rings, yes, but I suspect that tapping a ring down to a larger size on a grooved mandrel would be a little tricky to accomplish without scoring or distortion. I suppose it could be done carefully and gradually by rotating the ring a bit after each strike, but I've never done it.
I do like it for straightening bands with settings. It also comes in handy for making wire wrapped rings.
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Post by Rockoonz on Jul 5, 2020 10:51:04 GMT -5
And here I always thought the groove was relief for a saw blade when cutting a ring to resize.
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Post by opalpyrexia on Jul 5, 2020 11:15:30 GMT -5
And here I always thought the groove was relief for a saw blade when cutting a ring to resize.
It could certainly work for that.
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Post by Pat on Jul 5, 2020 11:57:02 GMT -5
And here I always thought the groove was relief for a saw blade when cutting a ring to resize. Hmmm... good idea! Thanks.
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