julieooly
Cave Dweller 
Member since October 2018
Posts: 721 
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Post by julieooly on Dec 20, 2019 14:00:58 GMT -5
Ok so I got a bunch of copper jump rings, an assortment of 18g. The package I got was $16.95 for 100 each Saw Cut 3.5, 4, 4.5, 5, 5.5, 6, 7, 8, 9 & 10mm OD for a total of 1,000 pieces. I'm looking back at Rio and I see that they list theirs as machined with the ID while Copper Wire USA (Amazon) uses the OD. I saved a few dollars and obviously there is a small size difference between the two, but going forward is it better for me to stick with Rio and the ID? I'm guessing they're just better quality rings and the measurement isn't critical unless you're trying to be consistent in your piece. www.amazon.com/gp/product/B01CFG2POU/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1 |
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Dec 20, 2019 19:12:00 GMT -5
18 ga is .04" diameter, so you'd double that then subtract from the OD measurements.
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Post by rockjunquie on Dec 20, 2019 20:16:45 GMT -5
I prefer using the ID since I am going to be putting something through it. I don't think I have ever bought them that only listed the OD. But, yeah, if you do the math, which I hate to do, it really doesn't matter, I guess.
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Post by hummingbirdstones on Dec 20, 2019 21:31:24 GMT -5
You can download and print this chart. Should help you out.
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julieooly
Cave Dweller
Member since October 2018
Posts: 721
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Post by julieooly on Dec 21, 2019 9:05:29 GMT -5
I prefer using the ID since I am going to be putting something through it. I don't think I have ever bought them that only listed the OD. But, yeah, if you do the math, which I hate to do, it really doesn't matter, I guess. What about machined vs saw cut? two ways to skin the cat? |
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Post by rockjunquie on Dec 21, 2019 9:24:14 GMT -5
I have no clue.
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Post by hummingbirdstones on Dec 21, 2019 10:43:45 GMT -5
Saw cut better for jewelry applications. See here:
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cosmetal
starting to spend too much on rocks
Member since September 2018
Posts: 115
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Post by cosmetal on Dec 21, 2019 12:44:40 GMT -5
I prefer using the ID since I am going to be putting something through it. I don't think I have ever bought them that only listed the OD. But, yeah, if you do the math, which I hate to do, it really doesn't matter, I guess. What about machined vs saw cut? two ways to skin the cat? In my experience, "saw cut" with a power-assisted tool is "machined". Using a jeweler's saw to cut one out of a section of wire, and then forming, is "hand cut". Peace, James |
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