removing paint from aluminium

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Tinworm
Posts: 1
Joined: Thu Jan 31, 2019 10:11 pm

removing paint from aluminium

Post by Tinworm » Fri Feb 15, 2019 12:22 am

Please could you tell me the approved method or product for removing paint from aluminium surfaces (square section tube and plate) without scoring, scratching or in anyway undermining the strength of an airframe?

Thank you
Peter Eveleigh
043146

tnowak
Posts: 439
Joined: Wed Jan 02, 2008 12:00 pm

Re: removing paint from aluminium

Post by tnowak » Fri Feb 15, 2019 8:37 am

Depends what type of paint you are trying to remove.
Most two pack paint can't (easily) be removed except by mechanical means.

If the paint is cellulose (or similar) then use professional paint stripper that contains methylene chloride. It is still available if you are a "professional/industrial" user.
Rinse well with water after paint has been removed.

The original Nitromors paint stripper used to contain methylene chloride but the modern, eco friendly, version doesn't and won't touch cellulose.

If you need to strip small parts then media blasting is an alternative. Various blasting media is used depending on what paint is being removed from what base metal.
Hope this helps.
Tony
Tony Nowak
008249

coxargus
Posts: 39
Joined: Fri Sep 11, 2015 2:57 pm

Re: removing paint from aluminium

Post by coxargus » Fri Feb 15, 2019 10:01 am

For small items I soak them in cheap thinners (gun wash) - it normally softens everything except 2 part epoxy - for larger areas an old towel soaked in said thinners spread over the area does the job. When the paint is soft, or even flaking, remove with a soft scraper and finish gently with a maroon Scotch Brite pad. Not as messy as using stripper and water.
Frank Cox
041606

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