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  #1  
Old 12-20-2021, 07:20 AM
BrianMatice BrianMatice is offline
 
Join Date: Feb 2016
Location: Riverview Florida
Posts: 7
Default VariPrime 615S - Discontinued - Need Alternate

I love VariPrime self etching primer. I can prime with Variprime in the dark, and it comes out great. I can hit it with a hammer and it wont come off. If you have been a long time user of VariPrime I suspect you love it too. I got some devastating news the other day from my paint supplier, that VariPrime 615s has been discontinued. Nooooooo!!!!!!!!!

They told me the direct replacement is Axalta 420. I bought some and tested. After scuff with scotchbrite and washing to remove oils and drying 24 hours I can scratch it of with my fingernail just as easy as dried mash potatoes on a plate. In fact, the dried potatoes stick better than this stuff does.

anyway to the point of my post. Has anyone out there found a good replacement for a Self Etching Primer, as good as VariPrime????
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C-150
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  #2  
Old 12-20-2021, 07:25 AM
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bjdecker bjdecker is offline
 
Join Date: Jun 2005
Location: Georgetown, TX
Posts: 1,135
Default

I've had good luck with SEM Primer -- https://www.semproducts.com/product/self-etching-primer

Scuff, clean with acetone or alcohol, and apply. Dries in < 5 minutes.
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  #3  
Old 12-20-2021, 08:32 AM
PhatRV PhatRV is offline
 
Join Date: Mar 2018
Location: Buena Park, California
Posts: 780
Default

Quote:
Originally Posted by BrianMatice View Post
I love VariPrime self etching primer. I can prime with Variprime in the dark, and it comes out great. I can hit it with a hammer and it wont come off. If you have been a long time user of VariPrime I suspect you love it too. I got some devastating news the other day from my paint supplier, that VariPrime 615s has been discontinued. Nooooooo!!!!!!!!!

They told me the direct replacement is Axalta 420. I bought some and tested. After scuff with scotchbrite and washing to remove oils and drying 24 hours I can scratch it of with my fingernail just as easy as dried mash potatoes on a plate. In fact, the dried potatoes stick better than this stuff does.

anyway to the point of my post. Has anyone out there found a good replacement for a Self Etching Primer, as good as VariPrime????
Have you considered using epoxy primer?
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  #4  
Old 12-20-2021, 08:43 AM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,116
Default Mashed potatoes

Quote:
Originally Posted by BrianMatice View Post
... In fact, the dried potatoes stick better than this stuff does.
How about thinned mashed potatoes? Sorry. Couldn't resist.
Lots of choices. SEM for rattle can self etch.
Akzo or Kirker Enduro Prime for 2K Epoxy
P60G2 for super light wash primer
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Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #5  
Old 12-21-2021, 10:09 PM
Mikeyb Mikeyb is offline
 
Join Date: Nov 2018
Location: Pasadena ca
Posts: 111
Default

Iím pretty sure nobody would use rattle can primer if they ever sprayed some 2-part epoxy. When I was building the empennage for my -8 I tested two of the popular spray can primers and AKZO epoxy on identically prepared aluminum samples and tested them with tape adhesion tests, bending with a dimple die and resistance to solvents. I wish I would have documented it better but there was no comparison. The epoxy was much, much better in all of these tests. Not the same ballpark or even league.
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  #6  
Old 12-22-2021, 07:17 AM
spark68 spark68 is offline
 
Join Date: Apr 2013
Location: Lk Havasu City, AZ
Posts: 212
Default Epoxy

I settled on two part epoxy after trying several rattle can primers early in my build. The adhesion and resistance to scratching are superior with the epoxy and makes the extra effort worthwhile. My preferred brands are Southern Polyurethane (SPI) and Tampco Paint. Product quality is good and cost is less than the big name companies.

https://tamcopaint.com/
https://www.southernpolyurethanes.com/
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  #7  
Old 12-22-2021, 09:38 AM
David Paule David Paule is offline
 
Join Date: Dec 2009
Location: Boulder, CO
Posts: 5,263
Default

Another decent epoxy primer is Stewart Systems's EkoPoxy. It's water-based and water-thinned. Quite tough. I clean the spray gun in the sink under running water.It dries to the tough pretty rapidly.

I'm using it for my cockpit and baggage areas, white for good maintenance or loading but dark gray where it might reflect to the canopy of my RV-3B. Elsewhere I'm using SEM rattle can primer, which is also decent. The SEM does not require a spray gun or cleaning the gun afterwards.

Dave
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  #8  
Old 12-22-2021, 10:51 AM
BoydBirchler BoydBirchler is offline
 
Join Date: Jul 2020
Location: Indianapolis
Posts: 165
Default

Variprime has always been my favorite. Ditzler made a good etch primer called DP which contained lead and was replaced with DPLF; LF means lead free. The problem with DP is it needs to be scuffed and a new coat applied if not finish painted over, within I think 60 days
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  #9  
Old 12-28-2021, 02:42 PM
sailsunfurled sailsunfurled is offline
 
Join Date: Oct 2021
Location: Gulf Breeze,FL
Posts: 18
Default VariPrime

Brian,

While searching for VariPrime I came across this thread. I see where you had info that this is discontinued but I found this link for VariPrime http://products.axaltacs.com/dcat/us...duct/615S.html on Cromax's website.

I found a source local to me, is it the same product your refer to as Variprime you have been using? I want to check with you that it is the same product before I spent a few $$$ on it.

Thanks,

Scott Arnold

Quote:
Originally Posted by BrianMatice View Post
I love VariPrime self etching primer. I can prime with Variprime in the dark, and it comes out great. I can hit it with a hammer and it wont come off. If you have been a long time user of VariPrime I suspect you love it too. I got some devastating news the other day from my paint supplier, that VariPrime 615s has been discontinued. Nooooooo!!!!!!!!!

They told me the direct replacement is Axalta 420. I bought some and tested. After scuff with scotchbrite and washing to remove oils and drying 24 hours I can scratch it of with my fingernail just as easy as dried mash potatoes on a plate. In fact, the dried potatoes stick better than this stuff does.

anyway to the point of my post. Has anyone out there found a good replacement for a Self Etching Primer, as good as VariPrime????
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