Is it aluminum? It looks it. You can dissolve it using sodium hydroxide. It's a common drain cleaner available from hardware stores. It fizzes a lot and a bottle of £5 drain cleaner will dissolve it all away.
@Husy started
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Is it aluminum? It looks it. You can dissolve it using sodium hydroxide. It's a common drain cleaner available from hardware stores. It fizzes a lot and a bottle of £5 drain cleaner will dissolve it all away.