Tech line problems.

Barry

Paint Fanatic
Staff member
Probably IMO it's more the person using the cup than the cup itself.
Two painters and then the owner.
If you saw the headaches I went through years ago, trying to figure what chemical was causing all my batches to fail to test, you would understand it can happen, and it does.

10% off, you would not know the difference and all the cups, depending on the section you use, are off some.

A spec for gel on a clear and a fast activator might be 55-65
Or another 330-345.
The tin does not change in grams, but this is why we have three people do the test.
 
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Barry

Paint Fanatic
Staff member
Also, the statement made how they rarely buff the clear, and last two weeks or so, they have had to buff all the jobs.
Gels in 2k are a lot faster than clears, but this did affect the clears. Using speed clear, they would never have made it past mixing.
 

Chris_Hamilton

Trying to be the best me, I can be
I meant that more in general than specific to your situation Barry. :)

What I don't understand about the Shop in question is if they were ordering and using more activator than was neccesary should that have been the big tip off to them? Once you go through the first gallon of product and you find you are using twice the activator?? That should be a tipoff that something is wrong? Is everyone brain dead there?
 

El Toro

Member
Years ago I worked at an Oldsmobile dealership body shop and every one was a combo body/paint man and what a mess in the paint room, Too many hands in the pie as they say. Always out of something or tons of problems The real kicker was a guy who could not read and just mixed up paint and primer with any product he could get his hand on!!!!!!!!!!!!!
 

Lizer

Mad Scientist
Years ago I worked at an Oldsmobile dealership body shop and every one was a combo body/paint man and what a mess in the paint room, Too many hands in the pie as they say. Always out of something or tons of problems The real kicker was a guy who could not read and just mixed up paint and primer with any product he could get his hand on!!!!!!!!!!!!!
You’ve just described a laboratory there—perfectly.
 

MikeK

Promoted Users
It's like the old common sense questions my father used in interviews a long time ago.

What's half of 2/3rds ? What color is George Washington's White horse ?

Surprising how many people got a pencil and paper. Had to think about the color..

Still wonder 'who' came up with the 8: theory...
 

Dean Jenkins

Promoted Users
I'm leaning toward a math problem, not a cup or product problem. My experience is that the material is pretty forgiving and I just can't see the cup markings being off enough to do that. It would take a gross printing error on the cup to cause that, IMHO.
 

Dean Jenkins

Promoted Users
I'm leaning toward a math problem, not a cup or product problem. My experience is that the material is pretty forgiving and I just can't see the cup markings being off enough to do that. It would take a gross printing error on the cup to cause that, IMHO.
Somewhere in the SPI literature is says to "measure, not use the 'glug' method." Which implies the "glug" method has come up on the support line o_O
 

crashtech

Combo Man & Mod
The greater the difference in volume between parts, the greater chance for error. With SPI, the 4:1 products are most error prone, and the 1:1 products are virtually bullet and idiot proof. It might not be possible to make a high solids 1:1 urethane primer, but I've seen 2:1 before.
 

shine

Member
i've been painting for 50 years . i still set up my bench before mixing . reducer on the left cleanup on the right . i read the can every time before mixing just in case . i make damn sure i have the right acc / reducers before i start . we all know what one brain fart can cost .
you ask a painter how they mixed they say " i mixed it right ? they dont really know half the time they just swear it was right . they also will never come back and say Damn i screwed up .
 

Dutchman

Member
As a jobber, I had a couple times when the cup printing was off. Noticed it mainly with a customer that used Universal clear on a constant basis and they were using too much activator. I don't remember the cups they were using, however, had them try another cup and made the 1:1 work out well. On another time, the 2k primer was setting up too fast, as Barry had with another customer, it was the cup measurement messing up the chemicals.
 
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