First off, apologies if this has been posted elsewhere, but my search attempts didn't turn up anything...though admittedly I didn't search very hard.

I'm about to make some PV kilts now that Summer's approaching (not that my wool 4-yard RevKs would be that much hotter, but I figure I'm gonna sweat in them either way so I need something machine-washable). I know Steve mentioned that pleats in PV can be permanent enough to survive the wash if the proper heat is used...but what is the proper amount of heat? I used my iron's cotton setting with a damp press cloth on the wool, but I also know from experience that that setting will melt polyester. So obviously I want the pleats to permanent without causing damage to the fabric.

And just so you know, I have a regular household iron and not some fancy, industrial-strength professional model. The settings are labeled "Synthetics", "Silk" and "Wool" (very close together), and "Cotton-Linen" at the very top. I put it just below the silk setting when I'm ironing my viscose-acetate UT kilts (which I'll be retiring once my PVs are complete) with no ill effects, but that's just to get the wrinkles out since the edges of the pleats are stitched...which, again, I'd rather not have to do as it'd make for a lot of extra work, not to mention not having the look I'm after.