Tungsten needle can be produced using tungsten wire with the diameter of 1mm as raw material.
The tip of tungsten needle can be processed into needle or spade shape depending on the shape of the broken end of tungsten wire. Besides, the depth of tungsten wire tip immersed in electrolyte can be adjusted at any time to slow down the tip slope, and therefore, it can be processed into cone shape.
Tungsten needle with high hardness can be used to dissect inner ear. It can also be applied to sculpt metal surface and cut particles in collodion. While this type of needle is very brittle, so that it is often bent or broken. Besides, it can also be applied for blowing embryo and glass.
Tungsten Needle Storage and Maintenance
The tip of tungsten needle should be carefully protected from breakage by accidental collision. It is generally fixed in a pointed up position and covered with the dust cover. If there is dirt on needle tip, you can wash it with running water.
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http://www.tungsten.com.cn/tungsten-needles.html