In the UK we have a two part putty I think it's called steel putty you break off the amount you need massage the two parts together when it is all the same colour apply to affected area ,it says you can grind and sand once set, I have used it for small holes on the floor of my car
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In the UK we have a two part putty I think it's called steel putty you break off the amount you need massage the two parts together when it is all the same colour apply to affected area ,it says you can grind and sand once set, I have used it for small holes on the floor of my car