Getting all the rust off an 8n hood

Any secrets to this? I got a hood I want to paint, and while I am stripping it I thought it would be nice to get all the hidden rust out too. Is there any trick to doing this short of removing the frame from the outer sheet metal? I thought about trying electrolysis but that needs line of sight for the electrodes.

Use to be a a place that dipped parts, would get every smidgeon of rust off, but they don't seem to be around anymore.

Removing the frame seems like it would be a hassle...
 
sand blast it?? that is what i did on the allis i had then gave it a very heavy primer on the Under side to keep it sealed up....
 
IIRC, phosphoric acid should get it all. Can be applied (in light solution) with a plant mister/spray bottle. Can't remember what to rinse with (alkyline(sp?) solution) then water, dry as fast a possible (wife's hair dryer works great - except for the consequences) then prime. HTH.
 

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