DP40 Epoxy primer ...Aerosol can?

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Offline Cuda Cody

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DP40 Epoxy primer ...Aerosol can?
« on: March 09, 2006 - 09:19:56 PM »
Can DP 40 epoxy primer be purchased in an aerosol can? :feedback:

I'm blasting some old nuts and bolts in the blast cabinet and need to protect them from future rust.  Is DP40 a good primer to use for this and assuming they will just be painted black what is a good rattle can paint to use?  Thanks a bunch!

~Cody
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Offline Cuda Cody

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Re: DP40 Epoxy primer ...Aerosol can?
« Reply #1 on: March 09, 2006 - 09:21:03 PM »
One more question.... is there a weld thru primer in a rattle can?
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Offline Topcat

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Re: DP40 Epoxy primer ...Aerosol can?
« Reply #2 on: March 09, 2006 - 09:24:54 PM »
Theres an aerosol  kit that allows you to pour in the desired ingredients and screw it back on then spray whatever you wish. Eastwood should have it.
Mike, Fremont, CA.


Offline Topcat

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Mike, Fremont, CA.


Offline FY1 RT SE

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Re: DP40 Epoxy primer ...Aerosol can?
« Reply #4 on: March 09, 2006 - 09:46:42 PM »
Can DP 40 epoxy primer be purchased in an aerosol can? :feedback:
~Cody

No, DP 40 is a 2K or 2 part product that uses a hardener, activator, catalyst, etc. It may or may not use a third component in the form of a solvent. 2K products don’t “dry” like a 1K/single stage product.  The hardeners in all types of paint work anaerobically.  This means that they harden without air. Once you add the hardener to the paint it hardens in about 3 hours no matter where it is, even in an aerosol can. Examples are epoxies, urethane under coats and top coats. This is why you can't add hardener to paint in aerosols.  It is also why most commercial paints available in aerosols have such poor durability.  Without their hardener most paints reach a relative hardness (compared to hardened paint) of about 20%.  The one exception is Alkyd Enamel.  Without hardener it reaches about 80% hardness.

Why not get some phosphoric acid and coat them, it will prevent rust and provide a good base for painting.

Offline Topcat

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Re: DP40 Epoxy primer ...Aerosol can?
« Reply #5 on: March 09, 2006 - 09:49:10 PM »
Also, check out POR 15. They have some stuff called Metal Mask. It will protect your nuts and bolts from rust and give them a natural cast iron look at the same time. You'll need the can that I showed previously.
Mike, Fremont, CA.


Offline Topcat

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Re: DP40 Epoxy primer ...Aerosol can?
« Reply #6 on: March 09, 2006 - 09:57:04 PM »
The great part about using this can is that you can mix whatever hardeners you wish, then spray. Afterwards, wash everthing real good with laquer thinner and you're done. I did some parts a while ago using the Metal Mask. They have been exposed to the elements for a while and have shown no signs of rusting.
Mike, Fremont, CA.


Offline Cuda Cody

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Re: DP40 Epoxy primer ...Aerosol can?
« Reply #7 on: March 09, 2006 - 11:56:37 PM »
Thanks!  That helps a bunch.

The metal mask looks like a good product. :thumbsup:   :clapping:
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