Hi Ernie,
Thanks for the kind words…
The Tamiya grime mix started out as
NATO BROWN 50%
NATO BLACK 40%
FLAT RED 10%
Thinned with XF-20A
But as time has gone on the mix has been modified with Tamiya LINOLEUM, HULL RED, BROWN, BLACK etc as I clean my airbrush.
I use an empty Tamiya XF-20A container to store the mix.
I use a Iwata Revolution airbrush around 15 PSI
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