Methalactate Adhesive. Its not cheap but there's not much else other than hot air that will actually bond with PP. The only other option I know of is PP based hot melt, which I I could only find for sale in bulk boxes.what did you use to bond the seat pieces together? doesnt look half melted like they usually do.
That's a realy good point. I cut the foam with a hot knife and then shaped it with a flap disk, but it was a bit too aggressive to get a realy smooth finish. I'll re-sand it and have another go when the dry build is completecould try to sand the foam super smooth before wrapping and a touch of heat will help the vinyl stretch while wrapping.