[tj.brewster]

Sprayed some Car-Rep on some SMC panels on my 99 TA. Attempted to sand a week later and all It did was ball up and clog my 3m paper. Waited another 2 weeks and it sanded better but still clogged the paper. Wet sanding was better but not good. Y'all might be on to something regarding cure time and humidity. I'm in southern AZ and its pretty dry here. Just my .02.

TJ

[HWYSTR455]

I've used U-POL, SEM, and SPI before, I usually just grab whatever the body supply place had on hand. Think I've used Eastwood too.

Never had any problem with any of those, just don't use hardware store stuff.



.

[Shiny]

Originally Posted by tj.brewster

Sprayed some Car-Rep on some SMC panels on my 99 TA. Attempted to sand a week later and all It did was ball up and clog my 3m paper. Waited another 2 weeks and it sanded better but still clogged the paper. Wet sanding was better but not good. Y'all might be on to something regarding cure time and humidity. I'm in southern AZ and its pretty dry here. Just my .02.

TJ

I'm sorry you had this happen but appreciate the info.

Noted!

It's disappointing, given the potential cost savings and convenience.

I went to the trouble of mixing, masking, spraying, and clean-up with both Summit and SPI epoxies for the few sheet metal panels I have primed but I find it a lot of work for a small job.

The low cost and convenience of an aerosol for small jobs is obvious and has motivated me to use the SprayMax epoxy a few times. It always hardens and covers but tends to go on "dry" and doesn't level as well as SPI. It definitely doesn't sand as well.

When I use only a small portion of a SprayMax can and have to throw the rest away, it's painful for my wallet.

I have a couple brackets I need to prime and am going to try spraying SPI with a Preval system to avoid 20 minutes and a bunch of solvent to clean the spray gun. All I need is warm day!

Mike