Rules, RULES, RULES, an editorial. :) [Archive] - Chevelle Tech

: Rules, RULES, RULES, an editorial. :)


MARTINSR
May 8th, 02, 6:23 PM
Listen, the subject of mixing products comes up here often. I put this together to clear up why I feel the way I do about the subject. I by NO means am saying this to anyone and it is not personal. In fact, I don't even remember a particular post or person saying anything. It just comes up from time to time.

Rules, rules, rules, so many rules. Use this don’t use that. Sand this, don’t sand that. These companies must think we are stupid right? They tell us to buy their products only. Of course they do, so they can make money off of us, right?

That is how many people feel. They mix and match products thinking they can out smart the chemists that created the product!

The manufacture spent hundreds of thousands of dollars, possibly even millions developing the product. They did EVERYTHING possible to make it perform it’s best. Heck, if they found it worked better if you painted it while standing on your head, THAT would be in the tech sheet!

Did you know that most of these products you use have a lifetime warranty? That’s right the manufacture will stand behind their primers, paints, and clears for your LIFETIME. Now, as a DIYer you can’t have this warranty. What makes the difference between the warranty YOU have (usually none) and the lifetime warranty a shop may have? The training, that’s what. The manufacture has classes for the painters to go to. He then takes a test, if he passes, the manufacture knows that he understands the procedures and proper product choice. The manufacture has learned that it is likely the painter will use the product properly and it will perform as expected. The manufacture puts hundreds of millions of dollars on the line with this warranty. They know they can, if the product is used EXACTLY as they have instructed on the tech sheet.

I have always been the kind of guy to follow instructions. Even before I had the training I used the products exactly as I was told to. I am sure this accounts for the very few failures I have had in the 28 plus years I have been doing this work.

Five of those 28 years I was a paint rep. If there is one singular thing I came away from that job with it would be importance of following the recommendations. As a rep I visited hundreds, possibly thousands of shops. These shops were in every shape and size. From one with seven frame machines and five paint booths doing a million dollars of business a month, to a one man shop with two stalls.

Among these shops there was a very distinct pattern, the ones who went to tech school, had only ONE brand of product on the shelves, and REFERRED to the tech sheets, had fewer problems. Most of these shops had NO problems, EVER.

They were open to hear about new products and ready to learn about how to make any product or tool perform better. Oh yeah, and they made more money.

Then, there was the “dark side”. These were the shops that would buy any product, any brand, just to save a dollar. Their shelves were covered with so many labels, it looked like the cans of soda and beer in a Quikie Mart cooler.
If, and I mean a BIG if, you could get them to a tech class, they were disruptive and later told me how they “could have taught that class”. They were quick to tell you how smart they were and how the paint company didn’t know jack about the “real world”. These shops took up about 99% of my trouble shooting time. They didn’t have little “how can I get this primer to dry faster”? sort of problems. They had TOTAL catastrophic failures! I was the first one they called because we must have put out a “bad batch” of product.

I tell you this only so you can understand where I get this passion that I have for using products properly. It was like watching a basketball came where one of the teams were wearing wet jeans and cowboy boots! After a while you wouldn’t even have to watch, you would know what the outcome was going to be.

Most product data sheets can be read in a few minutes. They are available on line, as well as in the store where you bought the products or even many are available on “Fax Back” right over your phone.

Get proper mixing containers. Be sure the solvents used match temperatures of the booth. Double check to be sure you have ALL the components (and enough of them) BEFORE you start so you don’t find yourself tempted to be “creative”.

The three most important things and the most common cause of failures are as follows:
1. Mix the proper components accurately .
2. Use the correct solvent for the temperature.
3. FOLLOW THE RECOMMENDED FLASH TIMES.

All this info is on the product data sheets, use them.

Painting can be difficult, there are things that are quite honestly out of your control. So, why not do EVERYTHING that IS in your control correctly.


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1965 Buick Gran Sport Convertible
1965 Buick Skylark H/T
"Fan of most anything that moves human beings"

knipe
May 8th, 02, 7:02 PM
Great words.


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Regards,
RLK
My Cars (http://home.texoma.net/~rknipe/)

Professor_SS
May 8th, 02, 7:06 PM
I know what your saying big guy. Recently I screwed up measuring the 5 to 1 ratio on k 36. Trying to hurry and finish for the night, I accidentally got it at 6 to 1. Man was the crap different. It sprayed differently and dried with funny glossy streaks in it. When I sanded it down two days later it was still gummy. I recently had a bright idea about covering a section that I was not happy with, that is currently primmed with etch and then k36, with epoxy thinking I could then use a lighter filler over the epoxy and short cut having to sand it all back down to bare metal and redo the filler again. Well, I consulted a few guys I trust, including MartinSr and my PPG supplier, and found out that if I had tried to do that I'd had some major acid vs. acid issues that could have really screwed me up.

You just can't rush this stuff. Unfortunately I'm like the hungry buzzard that says to his buddy, patience be damned, I'm going to kill something http://www.chevelles.com/forum/rolleyes.gif

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70 and 72 Chevelle
ACES # 4051 MCC # 448
TC # 1549 81/70 Cruisers

cjlandry
May 8th, 02, 9:47 PM
Words of wisdom indeed.

Working on an offshore drilling rig I get to see roustabouts and roughnecks do a lot of painting.

They use epoxies for some things and enamels for others.

Of course, there are specific thinners, hardeners, etc. for each type of paint. Frequently someone will use an epoxy without hardener or use the epoxy thinner with the enamel paint, and they have a huge mess to clean up.

It's not just a tough cleanup, but the rags are now a fire hazard as well as hazardous waste.

They think I'm nuts because I read the instructions on every new electrical fixture I install. I think they're nuts because they don't read the instructions and MSDS on their paints.

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My Web Page (http://www.landry-family.com) (updated 3-19-02)

"America will endure!"

Chad Landry
TC Member #643
ACES Member #04556
'68 El Camino, 357, L31 Vortec heads, 700R4, 3.55 posi.

tblw68ss
May 9th, 02, 2:27 AM
Amen,well said!

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'68 SS-396 (still not workin' on it)
"I get up at the crack of Dawn.......good thing she's a sound sleeper"
-2 Below Custom Automotive
Fbks, AK.

more ambition than brains
May 9th, 02, 8:47 PM
MARTINSR. So True, So True!!!!!!! Do it right, GOOD things happen, Do it wrong, BAD things happen. TO ALL: The manufacturers call them paint SYSTEMS for a reason. I like to think of paint systems like medicines, Too little is not good, too much is not good. Be safe, and do it just right. Karl.