My around-the-house UVC reducer/gun cleaner Experiment

EddieF

EddieF

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I was visiting friends/family in NY last week & had a hood to clear. Ordered UVC #4000 & extra slow activator before heading there but- no reducer. Picked up a qt of PPG DT870 strictly to clean/flush new gun.
Cutting out 2 days of fish-eye frustration, i'll type about experiment.

Poured UVC in small disposable plastic shot glasses & mixed 50/50 with water, alcohol, laq thinner x2, acetone, ppg.
Stir them and "see" some gel quick, other got milky (water mix), winner was quick strip acetone.

Did all this cause after flushing new gun with PPG, noticed decent size pot holes where we began painting hood & looked better as we got to other side.
Next coat I reduced the UVC a smidge for fun with PPG and DARN!!- fisheyed soon as I put down 1 pass. Stopped, cursed, yelled, soaked paper towel with ppg and wiped it off quick.

Next day father & I conducted the experiment & found Acetone to be our savour for flushing gun. Didn't attempt reducing UVC, came out great in 90F temp. Just had to light wetsand with 400 prior days coat. Love UVC Barry. Yes I know not to reduce UVC in most cases.

Home now, looked at gallon of UVC slow reducer & 1st ingredient...drum roll... Acetone.

BTW this was sprayed with a $15 (sale from $30) harbor f hvlp @ 35psi toy gun originally bought to spray chasis with oil. UVC makes me laugh heh. $15 spray gun.
Pics taken from ipod video, main reason for clearing hood was to fill areas that peeled. Gave it all 3 coats, no cut/buff, parks on street looks good enough for area.

Thanks SPI, my 1st post.
 
Im not sure I'm understanding your point? Best product to use when flushing new gun before use is Acetone?
 
You could have saved a lot of frustration and some cash by using lacquer thinner to clean the gun with. You probably needed to clean it more before running paint through it. Chinese seem to coat everything in some sort of oil. Whole store reeks of it.

I'm confused too, what is the point of mixing all that stuff with the clear?
 
Reason for testing was to find culprit thinner. Water, alcohol was just for fun & education. Bought 2 laq thinners & they both gelled the uvc. I 1st noticed this using Advantage reducer to clean gun after uvc. It went from pissing to drip to glob. Alcohol was 1st ingredient on cans of laq thinner. If i had spi reducer on hand, i'd use no other. It's good stuff. Hoping to save someone frustration. Hey- i learned something that day. That's a good.
 
Ok, got ya, Thanks for sharing. I had issues with Acetone cleaning my guns until guys here put me on to lacquer thinner.
 
EddieF;n76233 said:
Reason for testing was to find culprit thinner. Water, alcohol was just for fun & education. Bought 2 laq thinners & they both gelled the uvc. I 1st noticed this using Advantage reducer to clean gun after uvc. It went from pissing to drip to glob. Alcohol was 1st ingredient on cans of laq thinner. If i had spi reducer on hand, i'd use no other. It's good stuff. Hoping to save someone frustration. Hey- i learned something that day. That's a good.
Click to expand...

If alcohol was the the first ingredient then you got some really cheap lacquer thinner. Probably recycled stuff as opposed to Virgin. Refer to this MSDS sheet on the ingredients in Klean-Strip's Lacquer thinner.
http://www.kleanstrip.com/uploads/do...inner_MSDS.pdf

Good lacquer thinner will not gel UVC or any other clear. That's why it's popular as a wash thinner. DT870 (PPG) is a high quality reducer it's not gonna gel it either. But cleaning your guns with reducer gets expensive if you're doing this day in day out, hence the popularity of wash(Lacquer) thinner.

Nice job on the hood btw.
 
I think the most likely cause of the problem is residual contamination in the new gun as stated earlier, otherwise we would be led to suspect something wrong with the DT870, and that is possible not not at all likely! Would love to hear from the boss on this one.
 
The boss (great man) did tell me to try the stick ya finger in it & feel for residue after evap & it felt fine to me. Maybe it was a bad batch but try for yourself. Put a little uvc in a few baby food jars no activator & add different thinners 1:1. I'm just a backyard sprayer, not very often. The uvc & slow activator makes anyone with patients a star. Love it. A $15 spray gun did that hood heh. Thanks SPI.
 
Its very possible that the can was contaminated, not by PPG but the can company the coats the inside of the can, its happened a few times over the years to SPI and all of use buy the F-style can from one company as they are the only ones that make cans to fit the rinke plastic tops 57mm.
This is the same coating used in food can process and if to heavy because the the robots plugs up will cause fish-eyes, rare but can happen.
 
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