Well, other than actual trial & error, he started with a 19mm (3/4”) then switched to a 4mm nozzle. It appeared to do reasonably on the flat coupon, but not complete wraparound on the tubular shape. So the middle would be 6mm, which was already commented about! So try a 6 or one size up.
what nozzle is the best for an all around pattern that will do well on most everything
flat
Flat
60°
Well, other than actual trial & error, he started with a 19mm (3/4”) then switched to a 4mm nozzle. It appeared to do reasonably on the flat coupon, but not complete wraparound on the tubular shape. So the middle would be 6mm, which was already commented about! So try a 6 or one size up.