Paint strip aluminum valve covers

What is the safest method (not to harm the aluminum) to strip paint from aluminum valve covers?

 

Regular paint stripper (Zip Strip or similar) will work well.

 

I remember spilling brake fluid on mine...wrinkled the paint right off!

 

Lacquer thinner is the go-to paint stripper in my garage.It will cut just about anything.

 

TIMES 2 o n Lacquer Thinner

 

plastic media, not glass or sand!

 

Used regular old paint stripper on mine, and a old tooth brush to get down into the fins and recesses. Had to reapply a couple times to get the remnants out.
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