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Hi Maui and thanks for your reply. I didn't know about this process. I'll definitely look into it. Thanks! Panos

I agree. The McDonalds example certainly calls for caution. Anyway, moving on..

IRstuff, thanks for bringing this subject up in the first place. It was something worth looking into it. But I have been seeing for the last couple of days so many carabiner without a warning on them, from big and small companies, that I'm led to believe that it won't be a problem.

That will make me sleep better tonight. Thank you, btrueblood!

Idiocracy. [mad] Thanks, IRstuff. I'll take a deeper look at the whole matter.

Thanks for your reply IRstuff. I'm sure we can find examples in both cases. I've been noticing many carabiners not suitable for climbing without a warning written on them since the forum brought this matter up, so I think I'll take my chances.

Never crossed my mind. That's a great suggestion. I'll google for jewelry-making forums. Thanks, tomwalz!

EdStainless, got it about the tensile strength. The carabiner is made of Zinc alloy. We didn't care much about its strength because it was our intention from the beginning to make it for use as a keychain and not suitable for climbing. I wanted to do it in Stainless Steel, but the cost of the...

Hi TVP. Thank you very much for posting this. It's incredibly helpful. I have one newbie question: I'm trying to figure out which of those alloys shown in the .pdf are too soft to be used to make a carabiner pin and which aren't. I assume that the two kinds of strength, tensile and yield, are...

dwallace1971 and kingnero, thanks for the heads up, but besides not making the carabiners in the US, I've also seen a carabiner that can be used only as a keychain which is made in the US and is of a US company, and doesn't have the warning on the carabiner, but written only in the packaging and...

Thank you for your input, jwhit. I'll definitely keep that in mind. Panos

And this is the kind of alloys I need to look for. I really want to avoid plating to achieve a longer longevity and combine that with a beautiful luxurious color. Thank you very much EdStainless, weldstan, btrueblood and Compositepro for your replies. I've learned a ton and you made my life...

So, to my understanding, whenever I want to use a metal that is soft, I always look for alloys of that metal. Thank you for wisdom, weldstan.

Besides the appearance, I do care about the longevity of the carabiner. But the suggestion is sneaky and clever and I like it. I'm not sure how much it would change the cost of manufacturing, but I'll look into it. Panos

Compositepro, I aim for a more luxury approach, in looks as well as in price, so I would say that looking good and lasting for about a year with normal use (if there is a way to quantify and define a keychain use as normal) as a successful outcome. btrueblood, thank you for your input. Toxicity...

Compositepro, thank you very much for your reply. One question: Since the carabiner is made for use as a keychain, meaning a lot of rubbing and grinding against coins and keys in the user's pocket. Will the electroplated pin's finish chip or fade with use?

Edstainless and weldstan, thank you very much for your replies! Edstainless, actually the manufacturer suggested brass because copper wouldn't work and we are making the first prototypes with a brass pin, but the copper looks so much sexier in our 3D renders that I wanted to dig deeper and make...

Hi, I am making a carabiner which won't be suitable for climbing, but designed mainly to carry keys. In order to achieve a beautiful contrast, I want to make the pin/rivet of the carabiner out of copper. Would that create a problem with the longevity of the carabiner? Is copper not strong...