[TrevO]

I am hearing very positive things about the U-Pol 2k primer in the green/gray can. Is anyone using this product and if so what are your thoughts?

I am thinking about using this, and their etch primer.

 

[oldskoolsalt]

I use the weld thru primer. It seems to be a good product. I havent used any other primers that they make.

Are you intending to just spray small parts with it or ??

Greg

 

[Pops @ Tri-5.com]

I would check with porchdog.....From what I've seen, he is the paint expert here.

 

[hotrodg726]

never use etching primer. use epoxy on bare metal. etching primer has acid in it, and when improperly applied causes problems later.

 

[porchdog]

far from being an expert but i have been around a while. i can not give any advice on u- pol as i have never used it. always look for professional advice on these products. no offense to anyone but using something once does not give a good outlook of a product. i would suggest calling barry at spi or visiting the spi users forum . barry will tell you straight on any product. he wont bash it because it is not his. the forum has many professionals and i believe several have used it at one time or the other. either way good luck with it.

personally i do not use etch and do not use a urethane for direct to metal .

http://www.spiuserforum.com/forum.php

 

[TrevO]

I use the weld thru primer. It seems to be a good product. I havent used any other primers that they make.

Are you intending to just spray small parts with it or ??

Greg

I plan on doing one panel at a time. From what I am hearing both epoxy and etch work just fine if done properly. Just wondered if people have used the U-Pol primer. Many folks on this forum use the SPI, and I have spoken with them on the phone and they are very knowledgeable. SPI is a bit pricey however, and epoxy's are hard to sand. Sherwin Williams has good products too, so I am looking into their options. Thanks

 

[hotrodg726]

I plan on doing one panel at a time. From what I am hearing both epoxy and etch work just fine if done properly. Just wondered if people have used the U-Pol primer. Many folks on this forum use the SPI, and I have spoken with them on the phone and they are very knowledgeable. SPI is a bit pricey however, and epoxy's are hard to sand. Sherwin Williams has good products too, so I am looking into their options. Thanks

for the quality of the product and support spi is a great deal. it sands very well too. remember NO epoxy should be put over etch primer. etch primer has acids in it and can cause problems later . that is why it has mor ore less been phased out of the industry, except for old school guys who have been lucky with it.

 

[porchdog]

there is epoxy then there is epoxy . if an epoxy is recommended to use over etch i pass. there is so much to the mix of epoxies it would take a page or two to explain . if spi is pricey to you then your going to faint when it comes time to buy color and clear. the joy of the great price fades fast when your facing a failure . you have to remember that most of the 2nd-3rd line products are for collision shops. the car is repaired and usually traded or sold in less than 6 months never to be seen again. my guess is you plan to keep your car for years to come. do you really want to risk having to strip and start over ?
spi epoxy is 177.00 for 2 gals of sprayable material .

 

[Fiddy5Coupe]

The only U-Pol products I'm familiar with come in rattle cans. I have used 1K rattle can U-Pol for small parts. The cans, for what you get are very expensive compared to 2K stuff that you mix and run thru a gun. Etch primer is intended to go directly onto bare metal then have 2K over the top of that. Etch primer does nothing other than make the 2K stick better. I have not used epoxy, but plan to on my next project. I think Porchdog has a point, the fewer products you use, the chance of something going wrong diminish, hence the move toward epoxy as primer.

 

[TrevO]

THANK YOU!
I will look into the SPI epoxy then. Great advice, especially due to the fact that I will have "exposed" primer for a significant period of time.