So the time has come, to apply the macropoxy to the wheel wells on the car, but I have questions on application methods and prep. Some of the deep seams still have seam sealer in them, and I’m not sure if I need to seam seal the seams we removed the seam sealer from to weld or will the macropoxy be enough to seal them up? Do I need to spray it on, or can I get away with brush and rolling? I want to go for the suggested build up of 7mil but that sounds like a lot of coats. This is obviously my first time working with the product so I have no idea what to expect.

Anyone with application pictures?

Best application method?
Foam brush?
Paint Brush?
Spray?

Ironic that we both bought this stuff at roughly the same time...

I'm one piece of the puzzle from being ready to use that stuff. I figure I'll be doing this just before/after New Years. I'm going to reapply seam sealer to the floorpan of the car (to keep gravel dust out). I'm just not sure if this paint will eat the seam sealer (when the paint is wet) or not. I may wait until after, then seal the seams and use something else to cover the sealer.

Chris if you're reading this. Its The Macropoxy 646 from Sherwin Williams. Did you seam seal first? After? At all?

Yeah i searched and found that Chris did the seam sealer first, it sounds like that works for me i guess.

How do u plan on applying it?

Can you guys send me some before/after shots of the stuff? And let me know how it holds up? Wonder if this would work well on the rocker areas?

OK Kendrick, what the hell is macro poxy?

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Robert.

"You are way too normal to be on Rally Anarchy." Eddie Fiorelli.

PRODUCT DESCRIPTION
MACROPOXY 646 FAST CURE EPOXY is a high solids, high
build, fast drying, polyamide epoxy designed to protect steel
and concrete in industrial exposures. Ideal for maintenance
painting and fabrication shop applications. The high solids
content ensures adequate protection of sharp edges, corners,
and welds. This product can be applied directly to marginally
prepared steel surfaces.
• Low VOC • Chemical resistant
• Low odor • Abrasion resistant

RECOMMENDED USES
• Marine applications
• Fabrication shops • Refineries
• Pulp and paper mills • Chemical plants
• Power plants • Tank exteriors
• Offshore platforms • Water treatment plants
• Mill White and Black are acceptable for immersion use for
salt water and fresh water, not acceptable for potable water
• Suitable for use in USDA inspected facilities

Cool. Seam sealer then paint for me!

I have a pile of paint brushes and small 4"-6" rollers I was/am planning to use.

But I read that it can be sprayed and I'm tempted to get used to my paint gun under the car where "Oops" moments can't be seen.

I'm fairly certain I'll just end up applying it by hand though.

Before and after pictures for sure will find there way here.

I’m just to paranoid about the overspray to use a spay gun, I’m setup to run one but this stuff sounds like it’s the real deal and that’s the last thing I want all over the garage. The tip u need to spray the stuff on is pretty big, I don’t want to have to build a booth in my garage to do this.

Guys be REALLY careful on temperature. I am pretty sure the Spec sheet has the application temperatures, remember that both the air, and the panels you are applying it to need to be this temp.


After 2 years of rallying now, this stuff has held up amazingly well. Yes there are chips etc, but most of these places i will definately attribute to poor prep.

I found that i foam roller, like 4" long worked the best for most areas. I did seam seal under the stuff, and made sure it was REALLY dry (like 2 days).

Get a bunch of cheap foam brushes and do all your edges first, and then use the roller.

I think i did a really thin kind of skim coat, to get it to adhere, then REALLY layed it on thick.

Pretty sure i used about 1 gallon total paint.

---

Chris

Applied the 3m 8310 Bare metal seam sealer last night, fun part was trying to get it nice and smooth. But it should be good enough for the macropoxy application.



Edited 3 time(s). Last edit at 12/25/2009 01:07PM by token-negro.

Application

Applied it today

Looks like caramel. Cool for a street car but I won't be doing this to my rally car.

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Grant Hughes

NoCoast Wrote:
-------------------------------------------------------
> Looks like caramel. Cool for a street car but I
> won't be doing this to my rally car.
>
> Grant Hughes
> www.nocoastmotorsports.net
> Denver, CO


Yeah probably to much effort for you.