Krylon Fusion paint question

Discussion in 'Replica Props' started by PHArchivist, Feb 4, 2006.

  1. PHArchivist

    PHArchivist Master Member

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    The can states "recoat in less than 24 hours or more than 7 days". Suppose that means 7 days for a full cure?

    I'm between 1 and 7 days now, and am concerned about masking.

    The surface is dry to the touch, but I don't want to make an impression in the surface with the masking tape.

    Suppose I should just wait until next weekend?
     
  2. Watson

    Watson Sr Member RPF PREMIUM MEMBER

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    I would grap a spare model or some sheet plastic and test it out if you want to be absolutely sure. Having said that, I would think you should be okay with tamiya masking tap or other masking tapes, aka..low tack, as long as it has been at least 24 hours.

    Greg
     
  3. Darth Kahnt

    Darth Kahnt Sr Member

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    In my limited experience with Krylon paint, it is good after 24 hours. But my experience is limited, I used it only twice.
     
  4. Noeland

    Noeland Sr Member

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    I painted some plastic shelves from Lowe's with fusion glossy, and gave them a weekend with a fan blowing them on them to cure. haven't had any problems with them. The paint was touchable within a few minutes.

    Njc--------------------
     
  5. tripoli

    tripoli Master Member RPF PREMIUM MEMBER

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    Wait 24 hours, then your safe. Just make sure you shake the can for two minutes to get the paint mixed correctly.
    In an hour, you can sand the first layers with 800 and higher grit without too much of a problem for multiple layers.
    Did that with 4 pinewood derby cars the last two weeks. Brought home two trophies today from the race and now on to districts. :)
     
  6. PHArchivist

    PHArchivist Master Member

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    Yeah I shook for the standard 30 seconds, and the paint was going on WAY thin... So I shook some more.
     
  7. BlindSquirrel

    BlindSquirrel Sr Member RPF PREMIUM MEMBER

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    I got OFFICIAL word from Krylon that spray paint (I assume all of them) takes 7 days to completely dry. Maybe longer if it's humid...
     
  8. Darth Kahnt

    Darth Kahnt Sr Member

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    You can accelerate that by having a fan blowing air on it.
     
  9. JDFett

    JDFett Active Member

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    i use krylon fusion for everthing ive done...recoat after 15 and you can mask after a few hours...the reason they tell you recoat before 24 and after 7 days is if you dont recoat before 24 hours then you have to wait 7 days for the flex agents to fully set up..if you coat after 24 hours and dont wait the 7 days the chip resistancy and flexing wont perform as advertised. ive had no trouble masking things after a few hours in normal painting temps.
     
  10. matt1466

    matt1466 New Member

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    Another interesting tidbit of information from Krylon: you can use Minwax Polycrylic clear products to topcoat any Fusion paint. You must wait 10 days for it to fully cure before adding the clear.

    Polycrylic is pretty expensive (about $9 a can locally) but the results are worth it.
     
  11. JDFett

    JDFett Active Member

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    after you top coat it with that do you need to wetsand and then buff out for the mirror finish?
     
  12. KUROK

    KUROK Well-Known Member

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    Thanks Matt1466, I've been wondering what clear coat would be compatible.
     
  13. PHArchivist

    PHArchivist Master Member

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    How about standard Testor's Clear Flat? How well does this interact with the Fusion?
     
  14. dropshipbob

    dropshipbob Sr Member

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    I've used Testors flat sealor over Fusion paint and have had no problems. Just make sure the Fusion has fully cured.
     
  15. motman241

    motman241 Well-Known Member

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    I have no problem with any of the Krylon clear coats (including the Triple Thick gloss), after about a week of paint drying time.
     
  16. JDFett

    JDFett Active Member

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    i would also think that any krylon clear would be fine to use over the fusion as long as you give it the full 7-10 days cure time first...i will be using the krylon acryllic gloss clear for my project...unsure however of the wetsanding and buffing capabilities on this..anyone?

    edit - not anymore since i spoke to krylon and they stated this clear has high solvents and may cause blistering of the fusion paint
     
  17. BlindSquirrel

    BlindSquirrel Sr Member RPF PREMIUM MEMBER

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    I found the email from Krylon. I was asking about using Fusion as a primer or undercoat...



    The Krylon Fusion Paint may be used as a primer, however it was not manufactured nor tested as such. I would recommend using the Gloss White #2320 as the primer. This will act as a good base allowing the truest top coat color representation. If you are applying a dark color, you can always use a similar Fusion color for better hide.

    Regardless of the Fusion color used, I recommend to allow the last coat of Fusion to cure for a minimum of 7 full days. Lightly scuff sand the surface with 220-grit sandpaper to create a slight surface profile. This will allow your topcoat to bite into or bond to the Fusion Paint film more effectively.

    NOTE: Krylon does not recommend top coating the Fusion Paint coatings. Unfortunately, not all paint coatings are created equally. We are not able to test all blends or paint types with the Fusion Paints. There are, and will continue to be, exceptions to the standard rules established thus far. The main concern would be that the Fusion paint film and the topcoat paint film (oil, latex, lacquer, etc.) may expand or contract at different rates causing intercoat adhesion failure.

    Please Test:
    Apply the Fusion to a small test area. Allow the Fusion Paint to cure for a full seven days. Next, lightly sand the Fusion Paint film. Use 220-grit sandpaper. Remove the sanding dust with a soft, lint-free cloth. Apply your topcoat paint. Allow the test area to dry and cure for an additional 5-7 days. Test the surface by scratching the test area with your fingernail. It should resist scratching if the paint has bonded correctly. This will give you a pretty good indication of how the product will perform on your particular surface over the long run. If the topcoat is holding well, you may apply the system with more confidence.
     
  18. JDFett

    JDFett Active Member

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    good info...i will go that test route first before topcoating my stuff...thanks
     
  19. motman241

    motman241 Well-Known Member

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    Fusion was made specifically to work its way into plastic. You shouldn't need a primer if you use it on plastics.

    I painted my first trooper blaster with Fusion, and when I had it in my holster, I would get black scuff marks on my armor. Nothing ever showed up on the gun, but I clear coated the E-11 so nothing else came off.
     
  20. JDFett

    JDFett Active Member

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    i have not used any primer with my fusion and if you put enough paint on the item you almost dont need any clear coat...im not sure either on the clear coat compatibility...did you have no problems and if so what did you use for the clear coat? i picked up some krylon crystal clear acrylic...???
     
  21. motman241

    motman241 Well-Known Member

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    As long as the Fusion is cured, any of the Krylon clear coats (Triple Thick Gloss, Glossy, Satin, and Flat) all have worked well for me.

    Again, though, I clear coat my stuff to guard against the aditional weathering coming off (not the Fusion coming off). Plus, I don't want anything coming off on any of my costumes (the props I make are usually for costuming purposes).
     
  22. matt1466

    matt1466 New Member

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    The guy I talked to at Krylon said that they only recommended using the Minwax Polycrylic as a topcoat. Not sure why but I'm guessing its because the Polycrylic is water-based.

    My experience has been to use light coats, allow it to dry fully, sand lightly and topcoat again until you get the finish you want.

    Matt
     
  23. Fetthunter

    Fetthunter Sr Member

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    It contains a solvent that actually softens the top layer of plastic that you spray it on. It allows the paint to bond without a primer.
     
  24. JDFett

    JDFett Active Member

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    i also spoke to someone at krylon via email and he said not to use the clear gloss arylic as it contains more solvents in it and may cause the fusion to bubble or lift...he also stated the minwax as an option but stated that buffing the minwax or the fusion directly may leave scratches due to it being made from softer resins
     
  25. JDFett

    JDFett Active Member

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    DO NOT...I REPEAT..DO NOT use minwax polycrylic water based for your clear coat...the spray pattern splatters and gives a nasty orange peel look to it. I tried at least four coats and a sanding inbetween with 400 grit to smooth and it never came out like i wanted. another bad side effect...its water based and im not sure if its different when fully cured..but after about 3 hours of waiting..water turned the clear into blue spots everywhere that dried clear again...unless you want to get caught in a rainstorm as a blue vader i would say stay away from this stuff...I also was able to salvage my project after almost eight hours by wetsanding...took the entire four coats of clear off the painted surface with very little effort...this stuff is not a good choice...go get it cleared at an autobody shop you would be better off and wont get frustrated as i did.
     
  26. matt1466

    matt1466 New Member

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    Sorry about your problems SithLord. I had good luck with the Polycrylic. :(



     

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