Hello my freinds, Can somebody explain me of how the cleaning is made after etching in HF-vapor phase? Since sticking wants to be avoided i guess that water cleaning cannot be made. Is there some water vapor cleaner inside the system? Please for all answers. Tran _________________________________________________________________ Add photos to your e-mail with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail