Perfection Plus Part B Is Killing My Budget

Discussion in 'Materials' started by JumpingJax, Jun 3, 2013.

  1. JumpingJax
    Joined: Sep 2012
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    Location: Florida

    JumpingJax Junior Member

    Perfection Plus two part clear polyurethane "varnish" is a tough, rather elastic coating and is working really well for me.

    It comes in a one quart package, to be mixed 2:1 by volume. Part B, the "hardener" comes in a re-closeable can with a screw top. When coating small parts, I often use small amounts and always re-close the containers promptly. However, the Part B goes off, turning solid in its container if I try to store it for three or four weeks while working on other projects.

    Part B is only offered in combination with Part A. At $85-$105 per quart. I now have surplus Part A and no Part B; tough to face discarding the unused Part A.

    Anybody know how to source more Part B alone? Anybody know how to store opened Part B without it going off? (I've tried other closed containers, storing it in the dark and "Bloxygen" air displacement. Neither had any discernible effect.

    Is this an oxygen "cure"? A UV "cure"? A moisture "cure"? I can't find out what triggers the stuff to go off. The mfg. site offers no information on point.

    I'd hate to give up a really good product because (a) it's really expensive to begin with, but - barely - worth it; and (b) it's much too expensive when half or even more of the quart is lost and unusable because Part B can't be stored after opening.

    Any help would be appreciated.
     
  2. rwatson
    Joined: Aug 2007
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    Location: Tasmania,Australia

    rwatson Senior Member

    Try filling a partially filled Part B with an inert gas, eg Carbon Dioxide, even Propane.

    This is a common cure for partially used 2 part paints.

    You can make CO2 by burning a candle in a large container, or using dry ice ( not near Part B of course ).

    If you then have a hose from the bottom of the container, the CO2 will displace any air in the top of the can.
     
  3. upchurchmr
    Joined: Feb 2011
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    Location: Ft. Worth, Tx, USA

    upchurchmr Senior Member

    Buy West system. It is not near that expensive.

    Have you called the manufacturer directly?
     
  4. michael pierzga
    Joined: Dec 2008
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    Location: spain

    michael pierzga Senior Member

    Always a problem. Resealing the can of hardener.

    Same with a tube of 5200 adhesive.

    This is why 2 part paints are expensive to use for small jobs. Ive throw away more paint than I have actually spread on a surface. .

    With a can I do not open the lid of the part B. Instead I poke 2 small holes ,with a nail, thru the lid. Pour the small quantity out into a cup then wipe the lid clean and place a piece of vinyl electical tape over the small holes. I can make the hardener last a long time.



    A srcew top works the same. puncture the metal lid under the cap with a nail....be clean, wipe the hardener off the screw top and re close.
     
  5. PAR
    Joined: Nov 2003
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    Location: Eustis, FL

    PAR Yacht Designer/Builder

    Take any heavier than air gas you have in the shop and flood the can, before slamming the lid closed. I use whatever is handy, argon, acetylene, MAPP, propane, nitrogen, etc. Very commonly, I'll have the MAPP gas torch handy and I'll hold the lid over the can, while I pump in MAPP, straight from the canister, for several seconds. This displaces the air and it's moisture. I've opened cans sealed like this after a year, with no skin inside the can.
     
  6. daiquiri
    Joined: May 2004
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    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

    This is a great advice, PAR! :)
     

  7. PAR
    Joined: Nov 2003
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    Location: Eustis, FL

    PAR Yacht Designer/Builder

    I just opened cans of LPU today, which had been sealed with MAPP gas about 18 months ago. Yep, just fine, though a little MAPP gas smell. I blatantly stole this trick from someone else, so long ago, that I can't remember who it was. They were an old fart and also used plastic food wrap on the lid, when they pounded it closed. Both tricks work well.
     
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