Surface Preparation Laboratory
Rosbayerweg 163
1521 RW Wormerveer
The Netherlands
 +31-75 612 0501
 +31-75 612 0491
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A cotton tip contains many particulates with an abrasive action that are substantially larger than those that are used to polish the surface of a crystal. Whereas you may get away with using a cotton tip on most harder materials, on softer, lower melting point metals, they will do irreparable damage.