Thomas: I personally wouldn't recommed heated acetone due to the low flash point. If your aluminum lines are lifting off I would suggest you check your deposition system first. If you are depositing on silicon or silicon dioxide you might try a sputter etch prior to deposition if you are sputtering or an oxygen ash followed by a mild 10:1 HF dip for 20 seconds followed by an alcohol vapor dry if you are evaporating. Bob Henderson