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Old 05-20-2004, 03:38 AM
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What size bead hole/mandrel for 16g and 18g wire?

Hey folks...

For those of you bead makers, what size holes should I tell the bead mistress that I need for 16 and 18 gauge wire? And 20 guage, maybe? THANKS!

Denise
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Old 05-20-2004, 11:40 AM
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Emily Emily is offline
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Re: What size bead hole/mandrel for 16g and 18g wire?

I'm too mathematically inept to figure it out myself, but here's a table showing the diameters of various wire gauges in inches.

wire gauge table

and another one:

another wire gauge table

and one from Reactive Metals:

Reactive Metals conversion charts

According to the chart on the Reactive Metals website, which is the only one that shows decimal equivalents of fractions of an inch, 1/16 of an inch is 0.0625 of an inch, so a bead made on a 1/16 mandrel will accomodate 16 gauge wire (0.051 diameter) but not 14 gauge wire (0.064). Of course, a bead hole will be slightly larger than the mandrel diameter because of the bead release, so 14 gauge wire might fit.

Arrow Springs sells mandrels in .035 and .045 sizes, so it looks like those would fit 20 gauge and 18 gauge wire. I don't think a lot of people use mandrels that small, though. They're tricky to use because they bend so easily.
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Old 05-20-2004, 04:24 PM
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Re: What size bead hole/mandrel for 16g and 18g wire?

BUMP

Want to see if there anymore ideas about this~

Thanks Emily!!
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Old 05-20-2004, 04:51 PM
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Re: What size bead hole/mandrel for 16g and 18g wire?

I left out the practical advice: when you get a bead with a hole that's too big for the wire, which will happen often, you can stabilize the bead by putting a bunch of seed beads on the wire with the lampworked bead over them. A bead with a 3/32 hole will fit over "normal" seed beads. For beads with 1/16 holes, you'll need something smaller.
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