powder coat or POR-15?
Discussion
POR-15 is good as long as it's either on quite rough metal, or I believe there's a surface prep you can use if it's a bit smoother. I've put some on smooth metal before now and seen it peel off in a big skin.
I've avoided powder coating on my current project simply because I can touch up paint, and I can't touch up powder coating. The PC bloke said it shouldn't chip, but it probably will.
I've avoided powder coating on my current project simply because I can touch up paint, and I can't touch up powder coating. The PC bloke said it shouldn't chip, but it probably will.
All my wishbones, uprights and subframes were painted in 2-part Epoxy Mastic from www.rust.co.uk and they look spot on after two years. I did a lot of reading about the different coatings and in various tests the Epoxy Mastic stuff came out on top. POR-15 wasn't actually that great - it has a much nicer and glossier finish, but it was seemingly a bit more brittle. Powder coating is a definite no, because any chips or cracks allow the rust to develop underneath the coating without you knowing. I worked for TVR many years ago and their powder coated chassis were horrific for rust.
I *knew* there was another reason I didn't use POR-15 on chassis bits - the glossy finish. Frosts other chassis paint is also very glossy for some reason. I've used Epoxy Mastic (which I believe is a packaged expensive version of Jotun Jota-mastic btw) on the floorpan under (or above) the stonechip.
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