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  1. #51

    RE: AR-6 Wing mold construction

    Here some pics for the top of wing.
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    Kevin Matney 2 wrongs don't make a right But 2 Wrights make an Airplane
    www.Matneymodels.com

  2. #52

    RE: AR-6 Wing mold construction

    Here some pics for the top of wing. part2
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    Kevin Matney 2 wrongs don't make a right But 2 Wrights make an Airplane
    www.Matneymodels.com

  3. #53
    diggs_74's Avatar
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    RE: AR-6 Wing mold construction

    Not being one to go back on my word, I am sorry to say I am once again attacking a FG wing mold for the AR-6. After learning that my foam core wing construction skills leave much to be desired, I figure a CNC plug and FG mold are the only solution. As Kevin posted above, he did some really top notch CNC plugs out of MDF that I will be finishing and make the mold from. This will ensure a straight and true finished product.

    Because the steps used are no different than what I've previously posted, I will not bore you all with the filling, sanding, priming, sanding etc and will just show the finished product. Hopefully, without bullet holes this time
    Lee LaValley
    NMPRA# 33w
    www.ncplracing.org

    \"To finish first, one must first finish.....\"

  4. #54

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    RE: AR-6 Wing mold construction

    Good luck with that, Lee! The bullet holes were kinda fun in a warped way, though..
    No matter where you go, there you are!

  5. #55

    RE: AR-6 Wing mold construction

    Are we using Johnson paste wax?
    And PVA this time
    Kevin Matney 2 wrongs don't make a right But 2 Wrights make an Airplane
    www.Matneymodels.com

  6. #56
    diggs_74's Avatar
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    RE: AR-6 Wing mold construction

    Not sure about the Johnson's but I'll probably pick some up and try it on the stab mold.. PVA for sure though.
    Lee LaValley
    NMPRA# 33w
    www.ncplracing.org

    \"To finish first, one must first finish.....\"

  7. #57

    RE: AR-6 Wing mold construction

    I tried every thing under the sun for wax and keep going back to it. That is for over 30 + years!!!!
    Kevin Matney 2 wrongs don't make a right But 2 Wrights make an Airplane
    www.Matneymodels.com

  8. #58
    GSJames's Avatar
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    RE: AR-6 Wing mold construction


    ORIGINAL: fizzwater2
    The bullet holes were kinda fun in a warped way, though..
    Heck, I just thought he had discovered a new way to lighten the weight a bit...
    Gary James
    AMA CD 68845, NMPRA 15I, RCCA #908

  9. #59
    Scorpion Racing's Avatar
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    RE: AR-6 Wing mold construction

    Lee, just de-molded my first Frekote mold, and all I can say is WOW! It was 10 times easier to release the plug than Partall & PVA ever were. Not to mention, it only took 1 hour to go from polishing the plugs, to laying down the surface coat for the mold. If you haven't started with the wax, I suggest you get a quart of Frekote FMS mold sealer and a quart of 770-NC release. If you want to use the wax & PVA for part production after you pull the molds, you can use the Frekote mold stripper and then apply the wax & PVA.

    Just thought you might want to know!
    Scott Smith
    NMPRA 86t - District 7 VP

  10. #60

    RE: AR-6 Wing mold construction

    I will never use Frekote any more I lost 2 mold to that stuff,NEVER MORE
    Kevin Matney 2 wrongs don't make a right But 2 Wrights make an Airplane
    www.Matneymodels.com

  11. #61
    Scorpion Racing's Avatar
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    RE: AR-6 Wing mold construction

    Well, I am sorry to hear that Kevin. I used the mold sealer, followed by the release (3 coats of each, 10 minutes apart and wiping off before it dries) and it worked flawlessly for me. I know It only has a 6 month (or less, if you don't keep it airtight and room temperature) shelf life once opened. You also have to use a catalyzed 2K paint (I used an AU automotive from Napa) for best results. I know some resins & paints have compatibility issues with certain releases, so that might have been what happened to you. []

    I did some sample lay ups prior to risking my plugs, so I was sure it would work with my components. I also laid up some flat panels (identical to the mold surface) so that I can test paint/resin compatibility prior to putting it into my molds. I broke my last quickie fuselage mold by using a resin/paint combination that went thru Partall #2 wax & PVA #10. [:@]
    Scott Smith
    NMPRA 86t - District 7 VP

  12. #62

    RE: AR-6 Wing mold construction

    Bottom of wing plug
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    Kevin Matney 2 wrongs don't make a right But 2 Wrights make an Airplane
    www.Matneymodels.com


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