I did these last week on a father and daughter. Used machines I built, fusion/eternal, 5rs/13 curved mag(father's) and 5rs/11mag(daughter's). The daughter opted out on background, thankfully she wasn't as tan as her dad. He went first so his had cooled down nicely for the photo. His took three hours to do and hers took four.

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I can't upload the close-up photo, but you can see it on instagram @illustratedgentleman