I am trying to restore a vintage (1960s) espresso machine. The filter basket and portafilter appear to have been made of aluminum rather than brass. The basket was left to sit for more than 20 years inside the portafilter and the two seem to have gotten "stuck" to each other. I guess they are bound together by a layer of oxidation? Is there a solution they can be safely placed in that would dissolve that layer and free them up ... something that would leave no residue dangerous to humans when ingested in trace amounts and which would rinse off completely and impart no taste? Thanks Timo
- posted
18 years ago