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			I noticed the other day a guy soda blasting an aeroplane, so obliviously there must be an etch prime that will stick on alloy. Typically when sandblasting you are looking for a 25 micron "pitting" (surface ) for the paint to adhere to. If you use coarser media , like garnet or steel grit you will get a deeper micron finish, before painting. 
				__________________ Valentine MkV Covenanter MkIV Lynx MKI and MKII Loyd Carrier / English / Candian / LP. M3 Stuart | 
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