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03-16-2019, 11:11 PM | #1 |
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Problems with 2K primer
I got a gallon of SPI 2K primer. The tech sheet says to use a 1.8 to 2.5 tip gun. My 2.0 tip gun only gave me a fan about 3” tall. My new 2.5 tip gun worked great at first. Nice fan and a nice wet finish. As I was working the fan size steadily shrank. After waiting for the flash it was down to about 3”. Increasing the psi didn’t change anything. What am I doing wrong?
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"You know that little thing in your head that keeps you from saying things you shouldn't? Yeah well, I don't have one of those" 1969 Mercury Cougar Standard 4 speed 1969 Mercury Cougar XR7 convertible 1970 4WD Chevrolet Suburban 1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997) |
03-17-2019, 12:44 AM | #2 |
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Re: Problems with 2K primer
Sounds like your vent hole is getting plugged up.
Brian
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03-17-2019, 11:21 AM | #3 |
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Re: Problems with 2K primer
I had a similar issue with some high build primer. When I asked the paint store about this they recommended a small amount of reducer and it worked.
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03-17-2019, 12:25 PM | #4 |
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Re: Problems with 2K primer
Call the SPI tech line and get the right information.
Brian
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1948 Chevy pickup Chopped, Sectioned, 1953 Corvette 235 powered. Once was even 401 Buick mid engined with the carburetor right between the seats! Bought with paper route money in 1973 when I was 15. "Fan of most anything that moves human beings" |
03-17-2019, 04:31 PM | #5 |
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Re: Problems with 2K primer
I'll give them a call on Monday. So far their tech guy has been pretty good. I can't believe how thick this stuff is. It felt like it was hardening up in the gun. Even with the activator added it had the consistency of syrup. It wasn't the cup vent as the lid was off after topping it off after the flash time.
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"You know that little thing in your head that keeps you from saying things you shouldn't? Yeah well, I don't have one of those" 1969 Mercury Cougar Standard 4 speed 1969 Mercury Cougar XR7 convertible 1970 4WD Chevrolet Suburban 1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997) |
03-17-2019, 06:58 PM | #6 |
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Re: Problems with 2K primer
How long did you let it activate ? not with spi but with another brand I got a gallon that was twice as thick as normal called the manufacturer they said it was probably the bottom of the barrel and to reduce it and it usually only happens with high build
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03-17-2019, 09:03 PM | #7 | |
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Re: Problems with 2K primer
Quote:
I had traded texts with Barry a SPI tech earlier this month. Figured I'd send a text and hear back from him on Monday morning. He responded within minutes. He said it really sounds like the vent was clogged or that the fluid tip was getting plugged up. Not sure how to correct the fluid tip clogging. There was paint build up on the air horns while spraying. Maybe I'll have to mix smaller batches in the future. Thanks for all the replies everybody!
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"You know that little thing in your head that keeps you from saying things you shouldn't? Yeah well, I don't have one of those" 1969 Mercury Cougar Standard 4 speed 1969 Mercury Cougar XR7 convertible 1970 4WD Chevrolet Suburban 1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997) |
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03-18-2019, 01:43 AM | #8 |
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Re: Problems with 2K primer
You aren't using a filter at the base of your paint cup are you? These are too fine for high build and also produce the issue you describe. If so, remove the filter. If you're using 3M PPS, tear out the screen.
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03-18-2019, 08:44 AM | #9 |
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Re: Problems with 2K primer
Never used their 2K primer use their Epoxy all the time and it has a long induction time I have found with other high build primers A little reducer will let it lay down better and reduces sanding according to spi At 75° you can start sanding in 30 minutes don’t know the temperature that you were spraying it at but according to SPI you should use a reducer according to the temperature you are spraying at and which one of their primers you were spraying they recommend using 925 Retarder in summer heat if you were having problems after 15 minutes I think you need to use a reducer in order to control the dry time and as far as build goes you can always put on another coat or two in order to get the build you need
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03-18-2019, 10:59 AM | #10 | |
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Re: Problems with 2K primer
Quote:
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"You know that little thing in your head that keeps you from saying things you shouldn't? Yeah well, I don't have one of those" 1969 Mercury Cougar Standard 4 speed 1969 Mercury Cougar XR7 convertible 1970 4WD Chevrolet Suburban 1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997) |
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03-18-2019, 12:51 PM | #11 |
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Re: Problems with 2K primer
It has a pot life of 30 to 45 minutes at around 75° It can be reduced up to 25% if you use a slower reducer it will extend the pot life and it will lay down better if you don’t have one of their Little books you should get one it has all the information in it on what when where and how do use their products I usually use a 1.8 Tip and a little reducer I go by how it sprays at the time I’m spraying it and the temperature more than a given percentage of reductionYou could probably go online and find all the information on their products or anyone else’s for that matter
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Hand made A/C vent manifolds for 64-66 trucks adapts any aftermarket A/C to OEM vent |
03-18-2019, 03:18 PM | #12 |
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Re: Problems with 2K primer
I bought a gallon of SPI Epoxy and loved it.
I bought a gallon of their 2K primer and had the exact same problem you are experiencing. As soon as I mixed the primer the spray pattern was good. Then before I could finish the panel is started to gum up in the gun. I spoke with Barry, he suggested trying a little reducer...it didn't help. I ended up buying a different brand of high build and have had no problems.
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03-18-2019, 04:19 PM | #13 | |
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Re: Problems with 2K primer
Quote:
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"You know that little thing in your head that keeps you from saying things you shouldn't? Yeah well, I don't have one of those" 1969 Mercury Cougar Standard 4 speed 1969 Mercury Cougar XR7 convertible 1970 4WD Chevrolet Suburban 1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997) |
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03-18-2019, 06:21 PM | #14 |
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Re: Problems with 2K primer
My wife would say I don't have that problem!
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03-18-2019, 06:58 PM | #15 |
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Re: Problems with 2K primer
I prefer slick sand have used it for 20 years 0 shrinkage can be reduced with uereathane reduser put it on as thick or as thin as you like no need to use a sealer before painting
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Hand made A/C vent manifolds for 64-66 trucks adapts any aftermarket A/C to OEM vent |
03-19-2019, 10:07 PM | #16 |
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Re: Problems with 2K primer
I primed again tonight and didn’t have any problems. First batch was only 10 ounces an second was 20. The gun got cleaned between batches. Next gallon I’ll get some reducer too.
bs46488 I’d like to know what brand of high build you used.
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"You know that little thing in your head that keeps you from saying things you shouldn't? Yeah well, I don't have one of those" 1969 Mercury Cougar Standard 4 speed 1969 Mercury Cougar XR7 convertible 1970 4WD Chevrolet Suburban 1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997) |
03-20-2019, 12:28 PM | #17 |
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Re: Problems with 2K primer
I ran into a problem with SPI being shipped to Southern California so I searched for online suppliers that would/could ship to California.
I ended up switching to Eastwood Epoxy and 5 Star Xtreme Maxx Fill 2k high build. I have been very pleased with both products.
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03-20-2019, 09:15 PM | #18 | |
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Re: Problems with 2K primer
Quote:
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03-21-2019, 07:58 AM | #19 | |
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Re: Problems with 2K primer
Quote:
Couldn't get one vendor to ship Slick Sand once so I changed to a different one. Kim |
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03-21-2019, 10:33 AM | #20 |
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Re: Problems with 2K primer
Yep, that is one of the cool things about SPI. Get on the phone, make an order and WHAM that box is on your porch in no time.
Brian
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1948 Chevy pickup Chopped, Sectioned, 1953 Corvette 235 powered. Once was even 401 Buick mid engined with the carburetor right between the seats! Bought with paper route money in 1973 when I was 15. "Fan of most anything that moves human beings" |
03-21-2019, 11:53 PM | #21 | |
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Re: Problems with 2K primer
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