How do you make a sludge wash,

Hello!

For a navy aircraft I'd just pencil the lines in with a needle-sharp pencil, and use the wash just for the belly of the aircraft, that is always most dirty. You can also smudge the pencil marks a little with enamel thinner - in cas you didn't know...

As for the sludge wash I was always making it out of acrylic paint and dishwashing liquid. The dishwashing liquid made it semi-permanent - I mean possible to be wiped away later.

Hope it helps - have a nice day!

Paweł

If you ever want to, you can order them from a place in the US I know of.  They're called High Altitude Hobbies, and they're in Leadville, Colorado.  Just an extra option for you if you decide to try Flory at some point.

So basically as long as the enamel is sealed with future (or other suitable products) I can put an acrylic or enamel wash.

Unfortunately I don't think anyone carries Flory products in Toronto Canada. 

I mix just a bit of brown with black, then add thinner to get the consistancy I want.

Just go with Flory washes.  I used their Grime Wash on the F-4B I'm building, which is going to be very similar, color-wise, to an A-4E.  It looks good, and you don't have to worry about it damaging your paint.

https://www.google.com/search?q=acrylic+sludge+wash&oq=acrylic+sludge+wash&aqs=chrome..69i57j33i160l2.9305j0j7&client=ms-android-verizon&sourceid=chrome-mobile&ie=UTF-8

There is a lot of info out there on pre made and home made mixes,you should find this helpful