2k 2 pack in a can

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drew
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2k 2 pack in a can

Postby drew » Wed Feb 21, 2018 2:47 pm

Firstly, I need to get this out of the way. Every time I think of 2 Pack paint I can't help but think of 2Pac which invariably brings me to Rick Ross. I know, us Yanks can be a weird lot, but what can you do.

2Pac back (or in my head, "2 Pack")



Now, onto more serious endeavors. As many of you are aware at THUNDA I obliterated my rattle can paint job on my 75er mk. II rocket. Photos can be found here.

https://forum.ausrocketry.com/viewtopic.php?f=10&t=4901&p=57580#p57545

What I've found is that once your vehicle starts approaching Mach 2 rattle can paint starts to soften and above Mach 2 it starts peeling and clumping. So ever since 2015 I've been thinking about investing in an automotive 2 pack spray setup. That said it's no easy task from both a financial, technical, or preservation of health perspective so I've never started down the path seriously.

Well earlier this week I had a bit of a shakubuku moment. I never realised that you could source 2k 2 Pack paints in cans now! Sure, you'll spend ~$50aud for a clear coat can instead of $8-$10, but for a high quality hard finish I suspect these products will be wholly superior to standard rattle can paints or gloss coats. I've already found a local supplier for gloss coat cans and I'm enquiring regarding getting some base colors (white, orange, red).

I'll keep you all updated with my progress when I actually make some progress. That said I felt it worthwhile to go ahead and post this information to see if any of you have any experience or comments with can based 2k 2 pack spray paints.
Andrew Hamilton
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 23,908ft - K300 - Balls 22
Max V - 2,488 ft/s, ~Mach 2.2 - M2250 - THUNDA 2015

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Happy Heyoka
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Re: 2k 2 pack in a can

Postby Happy Heyoka » Tue Feb 27, 2018 12:07 pm

I've had some good results with the 2 part Dulux Duramax clear coat ($26 for a small 125g can from Bunnings).

It sets good and hard, and when it works, it works really well. Down side of course is that once you pull the pin (on the base of the can) you've got just a day or so to use it.

Another downside is that it appears to be a little bit fussy in the chemical compatibility department; had some mixed results there - one paint job I pretty much class as a failure (ie: did not harden properly) on a metallic base (although it was cold and I hurried it - quite possible I did not allow that metallic paint to go off completely before the Duramax clear coat)

Also bit fussy about application temperature and hardening time.
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drew
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Re: 2k 2 pack in a can

Postby drew » Wed Feb 28, 2018 1:58 pm

Cheers for the response Happy. I did see that Bunnings does have that Dulux offering but I've never had a really good experience with Dulux paints. Plus Montana Colors is the paint I normally use (MTN 94 to be specific) and I'm hoping their 2 pack offering will work with the MTN 94 range. That would be the best of both worlds for me as MTN 94 has pretty much every color of paint imaginable (189 colors at last check). Also, I'll have to check, but I think my can is a 300-400ml can. I'll confirm, but if that's the case the Dulux clear is actually more expensive?!? (I never thought I'd write that sentence!)
Andrew Hamilton
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 23,908ft - K300 - Balls 22
Max V - 2,488 ft/s, ~Mach 2.2 - M2250 - THUNDA 2015

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SpaceManMat
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Re: 2k 2 pack in a can

Postby SpaceManMat » Wed Feb 28, 2018 4:59 pm

Happy Heyoka wrote:I've had some good results with the 2 part Dulux Duramax clear coat ($26 for a small 125g can from Bunnings).

It sets good and hard, and when it works, it works really well. Down side of course is that once you pull the pin (on the base of the can) you've got just a day or so to use it.

Another downside is that it appears to be a little bit fussy in the chemical compatibility department; had some mixed results there - one paint job I pretty much class as a failure (ie: did not harden properly) on a metallic base (although it was cold and I hurried it - quite possible I did not allow that metallic paint to go off completely before the Duramax clear coat)

Also bit fussy about application temperature and hardening time.


What paints do you normally use and work well with the clear coat?
QRS: 124
AMRS: 32 L2 RSO
Highest Altitude: 13,647 feet
Fastest Flight: Mach 1.55
Largest Motor: CTI 1115J530 IM
Current Project: X Wing

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Happy Heyoka
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Re: 2k 2 pack in a can

Postby Happy Heyoka » Wed Feb 28, 2018 7:22 pm

SpaceManMat wrote:What paints do you normally use and work well with the clear coat?


I'm quite taken with the White Knight flouro colours - the Endeavour (orange - I love this colour for recovery) has flown half a dozen times with out a chip anywhere except right on the tip of the nose (which I did on concrete in the shed :oops: ) and has done a couple of lithobraking manoeuvres without paint off anywhere
DSCN1366_small.jpg



the Leviathan (yellow) it was a cheapy I got on the spur of the moment so the actual surface preparation not so great and the tail end of a can of day old Duramax, but it has lasted well... at least ten flights, maybe more...
DSCN2295_v2.JPG
DSCN2295_v2.JPG (217.58 KiB) Viewed 457 times

colour is great except when the Serp farmer decides to grow canola.

Just normal undercoat and decent drying times apparently makes the difference.
It was a White Knight metallic gold that failed with the Duramax top coat - but as I said, I suspect it still hadn't gone off properly.

I'll note that neither of those is supersonic but I have a 38mm MD that will be and I plan to use the flouro orange for that one too - we'll see if the Duramax peels or not...
Ha ha ha ha ha! You can't fool me! There ain't no Sanity Clause!
Chico Marx - A Night at the Opera (1935)

drew
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Re: 2k 2 pack in a can

Postby drew » Thu Mar 01, 2018 4:45 pm

Just a quick FYI, I can confirm the 2 pack can I picked up is $50aud for 400ml. Here's a link to the product.

http://www.thebutchershop.com.au/shop_online/art_supplies/aerosol_paints/mtn/clear_varnish/mtn_-_2k_varnish/

FYI there are both matte and gloss clear coats available.
Andrew Hamilton
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 23,908ft - K300 - Balls 22
Max V - 2,488 ft/s, ~Mach 2.2 - M2250 - THUNDA 2015

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SpaceManMat
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Re: 2k 2 pack in a can

Postby SpaceManMat » Thu Mar 01, 2018 5:26 pm

Both need to be used straight away, so question is how many rockets (and their size) can you get done with each?
QRS: 124
AMRS: 32 L2 RSO
Highest Altitude: 13,647 feet
Fastest Flight: Mach 1.55
Largest Motor: CTI 1115J530 IM
Current Project: X Wing

drew
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Re: 2k 2 pack in a can

Postby drew » Thu Mar 01, 2018 5:47 pm

Well, 12 hours, but I get your point. I plan on clear coating at least 4 rockets in one go. It's funny, I'm actually wondering if I'll need a second can. Another value add of 2 pack is the quick dry and reapply times. 60 minutes between coats from how I understand it. If I have any excess I'll just do a second coat of clear.
Andrew Hamilton
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 23,908ft - K300 - Balls 22
Max V - 2,488 ft/s, ~Mach 2.2 - M2250 - THUNDA 2015

Kelstra
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Re: 2k 2 pack in a can

Postby Kelstra » Wed Mar 07, 2018 9:20 pm

Hi guys. I'm in the sandblasting and coatings industry as a NACE coatings inspector. You have mentioned 2 pack (in a can) having compatibility issues going over metallic paint ( in a maybe dodgy environment) . This happens with all paints if the humidity/ dew point/ surface temps / surface (preparation) are not ideal when application takes place. 2 packs have a certain pot/ shelf life when the part A (Paint) part B (Hardener) are mixed. I will ask our Dulux rep about the product and get some feedback to you about it. BTW single pack paints will "fry" if you put 2 pack on top of them,(epoxy vs acrylic vs eurathane ) Cheers Ned :D


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