Make copper round-ended head pins?

Jewelry |

I'm a totally self-taught metal-smith and need an assist. I'm trying to form my own headpins in copper. I'd like to get the end of a 24 or 22 guage copper wire to roll into a small ball. I am presently thouroughly cleaning the wire, applying flux (tried both borate-based and liquid from Rio Grand), then heating with a propone torch. None of my many permutations of flux and heat seem to work. Can someone walk me through the steps and clarify the temperature I'm shooting for (pre- or post-anneal)? Thanks!


visitor's picture

copper headpins

Hi Mistyannemarold,

I'm not sure where you are having a problem. I use 'Handy Flux' (paste). After applying flux, you should place the wire about an inch from the 'blue' part of your flame & move or twirl the wire around until it forms a ball. Also, you might want to try using a charcoal block. I use an acetylene & air set up which burns a little hotter than propane & air.

Peggy


visitor's picture

Copper oxidizes fast and

Copper oxidizes fast and that is why a paste flux will work better for you than the liquids. Silver is much easier to do this with and the new Argentium silver is even easier. Practice helps. Can you melt the tip of the wire when it is laying flat and you are not trying to ball up the end? If you find this temperature than it might be easier for you to adjust that to just balling up the end.

marilyn


B.J. Severtson's picture

another approach

Misty.
I'll bet you are trying to take the heat to the wire, and for some reason you're not getting the heat control balling an end requires. Try this: light your torch leave it in the holder or stand. Use a cross lock tweezer to hold your wire. bring the end you want to ball up down into the blue tip of the flame. Many people find they have much more control over the wire than they do the torch. With this method the metal melts and travels up the wire. You gain time to react and a bunch of control. A few quick bounces of the wire into the tip of the flame should ball the end. For more control chuck the wire up in a pin vise. then it's easier to twist the wire as you introduce it to the flame. Paste flux. Wear a headset so you can see what's happening at the end of the wire. Best of luck Brad


warren's picture

Melt

Misty,
will the torch that you are using melt the wire? If has too broad of flame in may not have enough concentration of heat to actually melt the wire. If it will melt the wire than you should be able to ball.

warren
http://www.metalrecipes.com


mistyannemarold's picture

melting...

Warren,

I've actually blown/melted holes through the sheet with my propane torch, so I think that means yes. I did fiddle with the oxygen to gas ratio and this, plus advise from others seems to have solved my difficulty. Thanks for taking the time!


mistyannemarold's picture

success!

Take the wire to heat, not heat to the wire. Brilliant! I've successfully made 10 pins with this technique tonight. Thanks so much to all. It is amazing how some expert advise can really make a difference.

Now...if I could just stop blowing a hole through my copper sheet when soldering with hard solder, I'd be golden. :)


visitor's picture

You need to heat the whole

You need to heat the whole sheet for the solder to melt. Keep the flame moving. Put the torch in your non dominate hand and put it on "automatic" This way, your other hand is free to manipulate solder bits and parts.

marilyn