So Eli1 and I were discussing the possibility of a thread on art, , art for art's sake: fine art, commercial art, different mediums, supports, technique, whatever and photography too.
If by chance, any old "Wall Dogs" are following the techniques shown in this thread, especially those of us who knew we were not earning a living while "getting away with murder" (sloppy craftmanship) out on location, hats off to you, especially, workers of the 'set-backs' 20x100 among others! But to that special cream of the crop whom the industry coined back in the 1970s, "The Super Realist", these were a special lot who pushed an astounding amount of paint at an expeditious pace. I happened to work with one, my friend Jos. I have him on film the day he painted two elderly portraits (3-foot tall heads) in 1:05 hrs. They called him Jos-o-matic.
He and I developed a facilitator to get things rolling right along. I really don't remember the ratio, but it wouldn't matter if it were water-based or oil. If water-based just us a little water in some suitable extender. If oil, then use a little 100% mineral spirits in linseed oil (preferably white refined). This is applied before and after color in the process to extend set time. Run some test through a chemical hand-sprayer providing your supplier isn't supplying you with some pretty anemic paint viscosities to begin with $$$!
Then came the day. they wanted to put our half-tone fields to the test. Who did they pick for this gem, yep, your's truly. It wouldn't surprise me if they were running wagers on this one, quite unusual. It was a success, a run of the mill advertisement, 10' x 40' with the exception of its field being an even transition of a bright lemon Yellow on top to a rich dark purple on bottom. I recall that day as disregarding the in-house artwork and devised my 2-foot sectional colors to be a smooth exchange as possible, as I recall obviously, yellow, orange, red, blue, purple. Those of you who have been muralist for an extended time know how to achieve an even transition, each hue has to be placed in full view by percentages. Not covering one by fogging or glazing over, you'll ruin your potential!
I don't care if it's spray or brush, each color has to be pulled into the next, building that up as you go. But even with my handy spray bottle concoction, those bulletin colors are made as fast-setting. And do yourself a favor and get a brush/roller spinner to freshen up or clean out your 4" finishing mop to smooth out licks of the brush. I would have a 3" brush in each of the five colors.
My technique; Snap your 2-foot lines and spray 5' or 6' wide swaths, two sections down. but only lay in the sectional color 4' to 5' wide. What you want to end up with is the faintest amount of he lower hue reaching half way into the above color. I do this by crosshatch brushstrokes going from one end to the other staying on track as I make my way into the next line of crosshatch. Its exhausting at first but youth is on your side!! Depending on the quality of your paint will dictate how much spray you'll use.
Ha! I say "no glaze", yet one day saved a botched field of over 700 sq ft. Enjoy!