I just did this today:
Gravity bled/flushed the fluid out of my car's front brakes (and the master too).
Couldn't get them quite firm, and couldn't figure out how I was getting air into them - until I realized the threads could let air in. I tried just putting some brake fluid on the threads, which worked for a little bit, but got sucked in within three pumps of the brakes.

What did work was putting antiseize on the bleeder screw threads, not so much to actually put it on the threads, but to block air from being sucked in. Once I did that, it only took a few pedal strokes to clear the small amount of air in things. I only just cracked the bleeders - about 1/32 of a turn past loose.

I had a piece of vacuum line in a gatorade bottle with a hole in the lid and some clean brake fluid. Kneeling down and using a hammer to push the pedal with my arm (and having 20:13 vision) allowed me to see when I had clear/dirty fluid or bubbles coming out of the line. Worked like a charm. My brakes felt this good when I first went to stainless steel lines, and they'd been kinda soggy lately.

Just thought you might like a tip for solo easy brake bleeding. I looked around and found about 10 other forums saying antiseize was no big deal on bleed screws, but I haven't verified that it's chemically ok. If I had started with the antiseize, I could have been done in an hour.

Happy bricking!