i think over the years - vapor honing has been mscunstrued into surface prep. There was a system inthe past that actually was a sandblast type of equipment - that used either silica or aluminum oxide - n it didi both. Even todays pumice cannot stand up to a chemical clean unit - properly tuned. guess this is a little history on tht topic. regards Richard Fudalewski Atotech Canada Ltd *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************