off topic ,way off , but need rust removal assistance, i figured who would know more about this then members here Options

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Was given this project at work and it's been a major up hill battle

I need to remove the rust built up on dog kennel doors over 20 years

So far I've been removing the doors and totally emerging them in hot water and vinegar

To break down the rust and then grinding it (rust ) off the metal with a wire brush type drill bit

Connected to a drill .

It's working with mixed results ,since it's not a flush surface I have to kinda grind around the tiny bars and the wire bit can only get to about 50% of the rusty areas .


I know the most common solution for rust is to cut it out but can't do that here

Should I be sanding it off , blasting , fileing or what .?

And is there anything better then hot water and vinegar for soaking it in .?


I 've got about 20 doors I have to do so any suggestions are appreciated .

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