I was wondering what is the best way to follow after you sandblast the car. Epoxy primer, body work, filler, self eching primer.....then.... or if you have a better methond, and were would POR 15 fit in here.
The materials you are using should have directions on them. I'm not an expert, but am learning right now. My filler goes on bare, clean metal. Then glazing putty, then primer.
This is for body panels. I agree with the above post about sand blasting. I don't like the results of sand blasting. Even if it's done carefully to not warp the metal, the texture it leaves looks bad. Hopefully you meant that generically, and you're actually using soda or some other less agressive media.
Well with home air compressors they lack the power to warp metal, and blasters are great for parts, interior, window area, trunk, and under carage. Or any part that will not be seen as a finished area. I have already done my body work on my car. My friend is doing his mustang now and he wanted to know if there where a different way from doing it than mine, and so that is why I wanted to know. I am good with welding and sheet metal work but always egger to find better ways. I personally blasted the quarter panels becuase I was replacing them anyway, might as well hit the areas around them just in case I wasn't cuting that area off.
I would still like some feed back on primers and POR 15 application, what other people did.
Well with home air compressors they lack the power to warp metal, and blasters are great for parts, interior, window area, trunk, and under carage. Or any part that will not be seen as a finished area.
I did a fine job of warping my perfect original hood with a home air compressor and sandblaster several years ago. I was holding the gun at an angle and only using about 50 psi. Now I've been chemically stripping and using wire wheels on all exposed sheetmetal surfaces, and blasting other components that are thick enough not to warp. Not to mention the huge mess that sandblasting will make inside car, that stuff gets everywhere and you cannot get all of it out. Just when you think its all cleaned out and you start to paint, BAM, sand in the paint, not cool. Anyway, if no filler is needed, apply self-etching primer first. If you need filler, go ahead and apply a rough coat to that area(to bare metal), then just spray over it with the self etching when you spray the rest of the car/area. Do the necessary bodywork and then prime with a good primer. Lately I've been using a 3 part urethane filler/sealer/corrosion inhibitor primer, then i go over that with 400 grit and spray the color. Seems to be working well. I'm not a big fan of POR15, properly prepared metal with properly applied paint will not give you any trouble under normal circumstances. If you do heavy off roading or frequently drive on heavily salted roads, and never clean your vehicle, then POR15 may be for you. Hopefully, you wouldn't treat a classic mustang that way. And with all the prep needed to use the POR15, you could apply one helluva 'regular' paint job.
thanks for the reply, let me apologise, I miss typed it above, home air compressors usually don't have the power to warp, but also it is how well you know how to use a sandblaster, and I stated later on down that I would spray any body metal hood, fender etc unless I was planning on ditching it. Like I sprayed my quarters just becuase I wanted to get evertying around it as well, then I cut them out so I really didn't care if I warped them or not. I like the feedback on the preping though, I just used por 15 sparingly, only in places just ot be on the safe side.
also, my car is in a ground up restoration, so I stripped everthing to the metal. I wouldn't suggest sandblasting if you are doing minor work. Get a little elbow grease in there.