[Jacques Reed]

Perhaps sandblasting takes off all the paint before any levels can be exposed.

I have only used sandblasting on the chassis due to its size and preferred using a caustic soda and water bath to remove paint on all the other steel parts of my vehicle. This was then followed up with molasses and water immersion for rust removal. It is a slow process but thorough, and more gentle on sheet metal parts.

I can assure you as the levels of khaki/green/sand whatever paint came off after the caustic bath, the last remaining paint to be water blasted off the bare steel was either red or grey primer.

Cheers,