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I have welded loads of PVC as a cover maker an polypropelene, to repair plastic Wheely bins(dumpsters) There are two methods that I have used. For PVC you have a choice of using PVC cement on a lap joint using a pressure roller thereafter ( usually used for joining plumbing fittings and requires no real skill: or 2 KW hot air lap welding using a hot air gun( make sure it has a variable temperature control) blowing the hot air between the two sheets and rolling the seam with a polyurethane pressure roller. For polypropolene use the hot air gun and some polypropelene scrap as a filler rod ( get everything up to temperature and do a few tack welds to hold the patch in place the seam weld.
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1986 924S bought new. Now used for AutoX and street.
Chipped, throttle cam, highflow filter in original airbox/snorkel, 14mm rear sway
Hyundai Ioniq hybrid daily driver
Vindicator Vulcan V8 spyder, street legal sports racing car
(300hp,1400 lbs kerb weight) used for sprints on circuits, and hillclimbs
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