Baking a carabiner

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NickfromWI

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I'll explain after I hear a few responses, but what is the maximum temp that one could bake an aluminum carabiner in an oven without negatively affecting it's strength?

This oughtta be a fun one!

:)

Love
nick
 
I'm guessing the latter, Carl; not much room to climb in an oven.
 
Halfway?
images
 
I would ask the mfg, you wouldn't want to go hot enough to anneal the aluminum (affecting the temper), which varies by alloy and heat treatment.

Would it be in a life support/critical application? Over 400 would be dangerous for sure. Steel actually gets stronger up to around 400*.
 
Steel is generally stress-relieved at about 700F. Aluminum at 460F.

I'm not sure that really answers the question, though.
 
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So for the last year or so I've been experimenting with different paints to mark all my carabiners so that when I do a big group climb, I know which gear is mine.

The first thing to try is colored electrical tape. It falls off and is messy, so I don't like it. I've tried some paint pens and other things of the sort. Nothing really lasts that long.

I have now 2 paint pens, an enamel paint, and this other paint called "Glossies" by liquitex.

glossies.jpg


The directions say: "Place air-dried Glossies in cold oven, set temperature at 325° F (163° C). Using a cookie sheet is recommended to avoid direct heat. Turn on oven for 45 minutes. Turn off oven, open oven door and let cool to touch."

So it's a baked on sortof a thing. They had a sample in the art store and it couldn't scratch it with my fingernails. I know the rigors of the field will be much tougher than my meager fingernail, but this was more than could be said for the other paints I've tried.

If this doesn't work, the next best thing I've found is to get any old paint into the knurls of the gate, then when the paint scratches off, there should hopefully be some protected down deep between the knurls.

I'm gonna go for it. After reading a few things online, it sounds like 325 if far from what I would need to change the metal.

love
nick
 
I boil my biners to clean them. I would thin they get pretty damn hot in spots when working. 325 for a short time don't seem horrible.
Remember though, I test gear for a living, not all of the highest quality, and often of questionable manufacture.
 
When I was rock climbing I took a glass bead blaster to the stamped makers mark on the biner and then painted with nail polish. I have some that are 15 years or older that you can see some of the original polish in the stamping.
 
I've used nail polish before to mark gear. Directly on the biners. A dot on sewn slings after the end of the bar tack where it was melted, or better, on the sewn on tag.

Lasts a long time, especially in the little low spots of the strength rating numbers and icons.
 
colored sharpie to the stamped area last a long time......I would just bake brownies, not my gear
 
Nail polish lasts a lot longer with a clear undercoat and a clear top coat or 2. It does on nails anyway, never used it on hardware, but a layer or two of clear lacquer over the top of the colour would help a lot.
 
Nail polish lasts a lot longer with a clear undercoat and a clear top coat or 2. It does on nails anyway, never used it on hardware, but a layer or two of clear lacquer over the top of the colour would help a lot.

Care to show us your nails?:P
 
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