Got the S281 clone spoiler all done up this weekend, despite the heat. I removed the old tape with a heat gun and a plastic razor blade, along with 3M adhesive remover (that stuff is the jam). After that I hand-sanded with 220, then 500 to scuff the old clear and some bad spots/chips in the paint. After I did that, I washed it with soap/water and hung it up in the garage using weed-eater string from the garage door tracks.
Once I had it hanging like I wanted, I wiped it down again with soapy water and then isopropyl.
Here's the kit from Touch Up Zone: primer, two cans of base, and their 2K clear. The clear was pretty slick, it had a secondary nozzle on the bottom that you depressed when you were ready to spray it to mix the activator in with the clear.
Laying down primer - honestly, it was probably too hot/humid to be painting, but I wanted to get it done. I think my primer was drying before it was getting to the spoiler, as evidenced by the rough/gritty finish:
I put down 3 coats of primer. I just used my hand and a little 500 wet paper to knock the rough spots on the primer down before I started with color. Wiped down with soapy water and isopropyl again before I started color.
It had cooled down some by the time I got around to laying down the color and clear, thankfully. I put down 3 coats of color, and 3 coats of clear. I'm glad I picked up a second can of base, otherwise, I would have only had enough for two coats. I really needed the third coat, and I ended up sanding through the primer on a couple of edges where it was the roughest. I was kind of worried about the finish, but that clear is pretty amazing stuff. It's smooth for sure, and I haven't even polished it. I thought about wet sanding it, but I don't think it needs it. I've got some correction polish, and will likley just hit it with that before I mount it.
Finished product:
Overall, very happy with the kit from Touch Up Zone. I can't comment on how close it matches yet, but I'll update once I have it mounted. I should also preface this by saying the car has been painted before by the PO. Oh, the epoxy didn't hold. No worries, between the 3 other bolts and the 3M tape, it shouldn't go anywhere. I noticed a couple of spots I could have done better with, but honestly, as a beginner, I feel like it turned out really good.