Thanks, Chuckles. You should have a go. Much simpler than it looks. Even a home machine will plow through up to 4 layers, though it may be unhappy at seams. For the real thick areas, like the corner patches, I drove the balance wheel manually. My old, gorgeous, cast-iron Necchi laughed -- laughed! -- at the task. Until the little catch-spring thingy on the tensioner went AWOL at the next-to-last seam. (We'll find it some night, barefoot.) Finished up with my GF's Brother lightweight. T'was a comedown.
The trickiest bit was wrestling all that material around and feeding it smoothly thru the machine. A few things helped:
-- Increase the foot pressure. Unless you have a walking foot or puller, the material is slick and needs lots of down-pressure.
-- Dab some silicone on the needle from time to time.
-- Fill three or four bobbins at once. You burn thru them fast!
-- Clothespins or (better) spring clamps and some masking tape will keep the sail either side of the seam neatly rolled, allowing you to feed it as a semi-rigid unit. The whole scroll can be folded to accommodate room size.
-- This is easiest done sitting on the floor. Hamstrings are tight today.
I sewed the two big, upper seams with a dark green thread to act as a draft stripe, but it's too hard to see. Rats. BTW, Chuckles, your hairless avatar is weirder than mine. I have weird hairless creature avatar envy.