It varies, even locally. The place we bought our furniture, as you note, used
modern electric-powered woodworking tools but weren't attached to the grid.
They had a bank of diesel generators in the barn. They also used electric
lights. Other places used gas lights and farmed out the woodworking, mostly
to individuals, AIUI.
Haven't seen them go that far, but the furniture place above does have a web
site, computers, calculators, and cell phones. Interetingly, they have
non-Amish do their deliveries.
The ones I knew drove to PA to get the lumber (They didn't grow much Cherry in
Amish furniture is big business in Eastern Ohio. Nice stuff and not a whole
lot more expensive than decent store-bought stuff. The furniture we bought
will be handed down to the kids and probably theirs.
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