Primer on patches

[Mr J Morton]

I'm confused as to what primer I should be using.

I've been patching my Triumph Spitfire. Mostly round the doors openings and rear outer wheel arch. These are relatively small areas and will be filled on top. Whats your recommendation?

I understand epoxy primer can effect the surrounding paint.

Oh yes I'm on a wife enforced budget!

Jonnym

 

[jaykay]

what top coat are you going to use?
use the same line.

 

[Mr J Morton]

Same as is on it now, 2 pack green. I will either aerosol spray or get the shop body shop to do it (I know the health hazards and have protection).

I helped prep and spray the car a few years ago, I was going to primer it then apply filler. Should I prime again after?
I bought the shell from a guy who had part restored it and it had all been acid etched some of it is 8mm thick!

thanks for help Jonnym

 

[jaykay]

filler first on to bare metal, then do your primering.aerosol is not a good idea,as it can react with other paints.

 

[Mr J Morton]

What do you recommend?

I was looking at U-POL Acid #8 Etch Primer before reading about the reaction problem.

"Self etch primer:...That's handy for bare metal with body filler, but it can burrow under and lift existing paint or sealant, so it's not so good for repairs."

http://www.mig-welding.co.uk/primer.htm

Jonnym

 

[Engineer]

Best primer to use is epoxy 2 pack............only problem being you need air fed mask to spray it safely.

 

[jaykay]

being a spitfire,i take it you want it original.that would be cellulose.
cant see why you would want etch.as if you do the prep right there is no need.

 

[Mr J Morton]

There's nothing original about my Spitfire! Many mods along the way, the least of which is 2k paint respray. Cellulose is out the question, as I have quarter of a tin of 2k ready for the finish.

I have a mask which is rated OK to spray with. I'm more confused than before. Acid etch, epoxy 2 pack...which is it? Ideally a spray can would be best as I haven't got a spray gun right now. A link would be good

thanks

Jonnym

 

[the snooper]

if you dont have a spray gun then i would go down to the paint supplier and get some decent celly primer put into an aerosol that will be fine under 2k

 

[Mr J Morton]

Thanks snooper will do.

jonnym

 

[steveo3002]

http://www.ebay.co.uk/itm/2k-PRIMER..._Body_Shop_Supplies_Paint&hash=item4396a83705

these sound good , havent used one myself though

 

[Mr J Morton]

Ive heard good things about this as well http://www.halfords.com/webapp/wcs/..._productId_170745_langId_-1_categoryId_165625

Looks like a similar product. I think for patching they share the same problem, reaction to other paint work.

jonnym

 

[jaykay]

they are two completly differant products.upol is a etch,the other just primer.
if you put etch on to heavy,it will react with paint under it.
when i use etch i just put on one wet coat.but not a heavy one.
it can well be semi transparant.but as long as it is went on wet/unbroken, it will do it job.

 

[steveo3002]

yep differant things , you want to cover the bare metal with etch , then as soon as its dry high build the whole repair

id not overly worry about reactions unless the paintwork is a complete bodge job in which case it needs sanding off or working until its fit to prime

 

[Mr J Morton]

No paint work was pro done and done well. Apart from the bit he let me do, which was passable at best, he redid it and never let on.

So to recap. Upol etch onto bare metal, then filler, then what?, primer or paint?

sorry for my confusion, I know there are a lot of different ways of doing it, it just finding the one for me.

thanks

Jon

 

[steveo3002]

filler onto bare metal

etch all bare metal

filler primer

then paint

or
epoxy

filler onto the epoxy

filler primer

paint


some pics of what you are doing might help , no need to prime sound paint work just the repairs

 

[Mr J Morton]

I don't think I took photos and the car is quite some distance away.

Thanks

Jonnym