Shape Memory Alloys - Re: BRA WIRES!

Posted by Hong Wei Wang on March 30, 2004 at 13:57:33:

In Reply to: Re: BRA WIRES! posted by R. Cahill on March 12, 2004 at 02:25:35:

: : : Hi,

: : : I am trying to find a suitable product to dip metal bra wires in to coat the ends of them when they have been cut, so they are not sharp and won't poke through fabric. Obviously i do not wish to buy a barrel load! any ideas???

: ---Interesting. The first thing I thought of for covering sharp metal edges was "JB Weld". In case you aren't familiar with it, it is a type of adhesive, if you will, usually used for holding metal surfaces together, filling cracks, etc. It is something you could dip the wire-ends in that dries solid and won't chip off. You can buy it in small amounts at a hardware or auto parts store.
: Ryan


These are the shape memory alloy (NiTi or CuZnAl) wires which have been used for such applications. We used to cast the alloy, heat treat & wire draw, cold-press to shape, and heat treat to "train" the final shapes to "memorise" its shape. To cover both ends of a wire, we used to dip them into a similar white glossy adhesive resin and air dry. It worked quite well.

Hong Wei Wang
Greenhey Engineering Services, UK

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