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#1
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gluing organics to metal
What is the best glue to use to join an organic material like pearls to a
sterling silver post? Epoxies usually require mixing which is something I really don't want to do unless there is not an alternative adhesive. Any brand name adhesives you like better than others for the same application? ST -- remove the brackets [ ] to reply by email |
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#2
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gluing organics to metal
Snaggeltooth schrieb:
What is the best glue to use to join an organic material like pearls to a sterling silver post? Epoxies usually require mixing which is something I really don't want to do unless there is not an alternative adhesive. Any brand name adhesives you like better than others for the same application? ST Every epoxy is good enough for that. Important is only your treatment. Cleaning, perfect mixing of the ingredients, and good contact to the surfaces. So it´s a good idea to sand the silver surface before. Mit freundlichem Gruß, Heinrich Butschal -- Schmuck gut verkaufen und günstig kaufen http://www.schmuck-boerse.com Geschichten berühmter Juwelen http://www.royal-magazin.de Schmuck nach Maß anfertigen http://www.meister-atelier.de Firmengeschenke und Ehrennadeln http://www.schmuckfabrik.de |
#3
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gluing organics to metal
On Sun, 13 Aug 2006 18:40:42 +0000, Snaggeltooth wrote:
What is the best glue to use to join an organic material like pearls to a sterling silver post? Epoxies usually require mixing which is something I really don't want to do unless there is not an alternative adhesive. Any brand name adhesives you like better than others for the same application? The quick drying epoxies usually do not form as strong a bond, and I would stay away from them. The strongest epoxy I've found is JB Weld. Both surfaces to be joined need to have a bit of tooth and must be very clean. BTW, don't do it with anything valuable -- use a mechanical mount that can be removed. -- mbstevens http://www.mbstevens.com/ |
#4
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gluing organics to metal
On Mon, 14 Aug 2006 08:12:15 -0700, in rec.crafts.jewelry mbstevens
wrote: On Sun, 13 Aug 2006 18:40:42 +0000, Snaggeltooth wrote: What is the best glue to use to join an organic material like pearls to a sterling silver post? Epoxies usually require mixing which is something I really don't want to do unless there is not an alternative adhesive. Any brand name adhesives you like better than others for the same application? The quick drying epoxies usually do not form as strong a bond, and I would stay away from them. The strongest epoxy I've found is JB Weld. Both surfaces to be joined need to have a bit of tooth and must be very clean. BTW, don't do it with anything valuable -- use a mechanical mount that can be removed. I'll second the comment on the five minute/quick epoxies. Among other things, they're not waterproof (think perspiration) over time. My own favorite with epoxy for jewelry is Hughes "epoxy 330" if you want the cleanest look, with a transparent epoxy, or "epoxy 220", which is slightly stronger, but has an amber color, not clear. Both set up in about an hour, but can be speeded up by placing very close to an incandescent light bulb to heat them as they cure. Then it's ten minutes. Fine with pearls (don't do this to amber, I suspect...) As to the not doing this with valuables, well, I'll beg to differ a bit, at least as it comes to pearls. Epoxies ARE removable. "Attack" solvent takes the bonds apart with no damage to parts or gems, SO LONG AS THE GEM CAN WITHSTAND THE SOLVENT. Cultured pearls are fine with this. Mabe or other assembled pearls or things like doublet and triplet gems, are not. Resin gems like amber probably are not OK with it either, though I'm not sure. The other class of glues that are commonly used with pearl posts, by the way, are the cyanoacrylates (super glues) Most perform about the same once cured. Harder to disassemble, though you usually can do it with accurate application of heat to the metal. Super glues require a very close fit between the peg and the pearl, or other parts being jointed, to work well. They're not good gap fillers (and the gel types that DO fill gaps, are not that strong). Epoxies are better with gap filling. And, though you have to mess with mixing, they're neater to apply. Super glues have some nasty traps, such as the propensity to leave a whiteish foggy coating on things if, after you glue the pearl on your finished masterpiece, you make the mistake of cleaning it, steaming it, or putting it in a ziplock bag too soon after the glue sets. cheers Peter |
#5
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gluing organics to metal
Snaggeltooth wrote:
What is the best glue to use to join an organic material like pearls to a sterling silver post? Pearl cement. Epoxies usually require mixing which is something I really don't want to do Why? unless there is not an alternative adhesive. Any brand name adhesives you like better than others for the same application? Loctite industrial adhesives. -- Abrasha http://www.abrasha.com |
#6
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gluing organics to metal
mbstevens wrote:
On Sun, 13 Aug 2006 18:40:42 +0000, Snaggeltooth wrote: What is the best glue to use to join an organic material like pearls to a sterling silver post? Epoxies usually require mixing which is something I really don't want to do unless there is not an alternative adhesive. Any brand name adhesives you like better than others for the same application? The quick drying epoxies usually do not form as strong a bond, and I would stay away from them. The strongest epoxy I've found is JB Weld. Both surfaces to be joined need to have a bit of tooth and must be very clean. BTW, don't do it with anything valuable -- use a mechanical mount that can be removed. I disagree. Pearl cements and epoxies are fine, and CAN easily be removed with "Attack" for instance. http://www.ottofrei.com/store/produc...3&cat=0&page=1 And what exactly do you mean with "mechanical mount"? How would you mount a pearl "mechanically" to a sterling silver post? Would you elaborate a bit please. -- Abrasha http://www.abrasha.com |
#7
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gluing organics to metal
Great info! Although I have to say that if I intend to glue something
together, I want it to stay there forever so being able to disassemble is not even a factor. I tried using G-S Hypo Cement but it would not hold. Then I used E6000 which did take, but that stuff is too thick and gunky and hard to use in very small applications without getting the spider web effect. I've noticed the whitish film when using super glue, which is why I didn't attempt using it on good matched pearls and sterling. So, I'll try the Hughes 330 and see how it does. thanks guys, ST "Peter W.. Rowe," wrote in message ... On Mon, 14 Aug 2006 08:12:15 -0700, in rec.crafts.jewelry mbstevens wrote: On Sun, 13 Aug 2006 18:40:42 +0000, Snaggeltooth wrote: What is the best glue to use to join an organic material like pearls to a sterling silver post? Epoxies usually require mixing which is something I really don't want to do unless there is not an alternative adhesive. Any brand name adhesives you like better than others for the same application? The quick drying epoxies usually do not form as strong a bond, and I would stay away from them. The strongest epoxy I've found is JB Weld. Both surfaces to be joined need to have a bit of tooth and must be very clean. BTW, don't do it with anything valuable -- use a mechanical mount that can be removed. I'll second the comment on the five minute/quick epoxies. Among other things, they're not waterproof (think perspiration) over time. My own favorite with epoxy for jewelry is Hughes "epoxy 330" if you want the cleanest look, with a transparent epoxy, or "epoxy 220", which is slightly stronger, but has an amber color, not clear. Both set up in about an hour, but can be speeded up by placing very close to an incandescent light bulb to heat them as they cure. Then it's ten minutes. Fine with pearls (don't do this to amber, I suspect...) As to the not doing this with valuables, well, I'll beg to differ a bit, at least as it comes to pearls. Epoxies ARE removable. "Attack" solvent takes the bonds apart with no damage to parts or gems, SO LONG AS THE GEM CAN WITHSTAND THE SOLVENT. Cultured pearls are fine with this. Mabe or other assembled pearls or things like doublet and triplet gems, are not. Resin gems like amber probably are not OK with it either, though I'm not sure. The other class of glues that are commonly used with pearl posts, by the way, are the cyanoacrylates (super glues) Most perform about the same once cured. Harder to disassemble, though you usually can do it with accurate application of heat to the metal. Super glues require a very close fit between the peg and the pearl, or other parts being jointed, to work well. They're not good gap fillers (and the gel types that DO fill gaps, are not that strong). Epoxies are better with gap filling. And, though you have to mess with mixing, they're neater to apply. Super glues have some nasty traps, such as the propensity to leave a whiteish foggy coating on things if, after you glue the pearl on your finished masterpiece, you make the mistake of cleaning it, steaming it, or putting it in a ziplock bag too soon after the glue sets. cheers Peter |
#8
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gluing organics to metal
On Tue, 15 Aug 2006 01:29:51 +0000, Abrasha wrote:
And what exactly do you mean with "mechanical mount"? How would you mount a pearl "mechanically" to a sterling silver post? Would you elaborate a bit please. I should have excluded pearls; I mount drilled pearls with adhesives myself. I do believe that _generally_ if you want a permanent mount of something on a metal surface, a mechanical one is better than an adhesive one. |
#9
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gluing organics to metal
What is the best glue to use to join an organic material like pearls to a
sterling silver post? Pearl cement. I googled "pearl cement" and found only one place that sold anything listing "pearl cement" and that was at HSWalsh. When I previewed the product, it showed G-S Hypo Cement which I've already used and it didn't hold. The pearl fell right off the post while I was wearing the earrings so that's when I used E6000, but as I mentioned in previous response, that's goopy and subject to the spider web effect. Not the best stuff to use for such a small application. It did work however. Does this pearl cement have a brand name? Epoxies usually require mixing which is something I really don't want to do Why? Perhaps I am remembering the kind my dad used to use, and I remember it being a pain in the ass - having two huge syringes, finding something to mix the two parts together on, making sure the two parts are of equal volume, etc. Seems like overkill when I only need a miniscule amount for a couple of pearl earrings at any given time. If epoxies have changed that much in the past 15 - 20 years, then surely I need to look into it a bit further. Any brand name adhesives you like better than others for the same application? Loctite industrial adhesives. Thanks, I'll check it out as well as the Hughes 330 Peter suggested. -- Abrasha http://www.abrasha.com |
#10
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gluing organics to metal
"Abrasha" wrote And what exactly do you mean with "mechanical mount"? How would you mount a pearl "mechanically" to a sterling silver post? Would you elaborate a bit please. -- Abrasha http://www.abrasha.com [I'm surprised you don't know how to do this. Split the post and insert a small wedge of silver. Push the pearl onto it, driving the wedge into the split and expanding it in the hole. This results in a "mechanical" connection that was often used before the advent of modern glues. Of course, a little epoxy helps too...] Andrew Werby www.unitedartworks.com |
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