STOP THE MADNESS! (A brief primer/filler commentary)

Discussion in 'The Watering Hole' started by georgegassaway, Dec 10, 2019.

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  1. Dec 10, 2019 #1

    georgegassaway

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    Use white primer for a light-colored rocket.
    NOT a dark primer that will require MANY coats of the lighter paint to cover up!

    Fill seams and fill balsa parts BEFORE gluing them together, and gluing to the rocket.

    There. It’s out of my system…. for now. :)
     
  2. Dec 11, 2019 #2

    jqavins

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    If it's available, us slightly off white primer when the rocket is going to be white; it lets you see if you've missed a spot with the color coat.

    And filling parts before assembly? Hell Yes!
     
  3. Dec 11, 2019 #3

    Nytrunner

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    Where can you get white filler primer?
     
  4. Dec 11, 2019 #4

    mbeels

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    My local HomeDepot only carries in the grey filler-primer in the store, but I ordered white primer for delivery to the store and pick-up through the website. There are a bunch of colors and variations available. I don't think that this white fills as well as the Rustoleum grey 2:1 in filler-primer, however. But it is sandable, and it does fill to some extent.

    https://www.homedepot.com/p/Rust-Ol...Sandable-Primer-Spray-6-Pack-260737/204707458
     
  5. Dec 11, 2019 #5

    AfterBurners

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    Duplicolor makes good primer and paints
     
  6. Dec 11, 2019 #6

    Nytrunner

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    Exactly. I can find several shades of gray to black filler primer at Walmart (auto-section) and other stores, but I haven't seen a white filler primer.

    But for that I just do lighter grey filler on the first coat, spot putty, then followup coats in white primer.
     
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  7. Dec 11, 2019 #7

    neil_w

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    I have on multiple occasions painted white top coats over grey filler/primer and it works OK. Nowadays I do try to do a coat of regular primer over the filler/primer though.
     
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  8. Dec 11, 2019 #8

    mbeels

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    Yeah, I haven't found a white filler-primer either. The white primer on grey filler-primer sounds like a good approach.
     
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  9. Dec 11, 2019 #9

    Wayco

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    Dang! I have been getting this primer at AutoZone for $8 a can. Thanks for the link, I'm all over that deal!

    This is also my preferred method, fill it and then spray white primer over it.
     
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  10. Dec 11, 2019 #10

    Bufkin Fairchild

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    What grit sandpaper do you guys use for the rusto 2x primer?
     
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  11. Dec 11, 2019 #11

    tomsteve

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    800 is my choice. spray bombs are pretty thin so if i go 400 or 600 the sanding scratches show through
     
  12. Dec 12, 2019 #12

    Maxitout

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    I use Kilz primer from Home Depot. It's supposed to be an interior primer, but it's white, covers well, and hasn't had any reaction to the Rustoleum I use over it. It's about $6 a can. I've been using it for years.

    Phil L.
     
  13. Dec 12, 2019 #13

    MALBAR 70

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    The white Kilz is a nice high-build primer. It's also comparable to Rustoleum 2:1 sandable filler/primer in the way it fills and sands. I'll often use a coat of Rusto 2:1, sand, fill low spots with Bondo glazing and spot filler. Then I'll shoot another light coat of the 2:1(maybe). If its to be a light colored top coat, the rocket gets a good hosing of the white Kilz primer and sanded smooth.
     
  14. Dec 12, 2019 #14

    mbeels

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    Is it wet-sandable? How is the odor? I wonder if I could use this stuff indoors during the winter.
     
  15. Dec 12, 2019 #15

    MALBAR 70

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    I've never wet sanded it but I don't see why you couldn't. The odor isn't as strong as most rattle can primers, as it's made for indoor use. I don't know if I'd paint indoors with it as it seems to be quite messy and the over spray gets everywhere, but that could be just me.
     
  16. Dec 12, 2019 #16

    mbeels

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    Hmmm... I wonder if the Kilz primer in a quart tub would work, brushed on, and then sanded.
     
    Last edited: Dec 12, 2019
  17. Dec 12, 2019 #17

    neil_w

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    Ah, the perpetual dream... low-odor filler/primer that can be done indoors. *sigh*
     
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  18. Dec 12, 2019 #18

    MALBAR 70

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    Never used the stuff in the tub on a rocket. We've used it at work to cover some nasty, grimy stains on the walls though. :cool:
     
  19. Dec 12, 2019 #19

    MALBAR 70

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  20. Dec 12, 2019 #20

    cwbullet

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    My easy primer and painting tutorial is to avoid it. Don't do it and let em earn their pain. If they crash, I just saves from cash and time.
     
  21. Dec 12, 2019 #21

    Funkworks

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    But I've never had a crash!
    (and now I'm jinxed and there goes my lucky streak)

    I understand that logic but flipping it around: I'd rather make flights worth their while and use a motor in a worthy rocket!

    In my case, I don't get to fly very often, so at this point, I'd rather see my colours crash than flying cardboard.
     
  22. Dec 12, 2019 #22

    H_Rocket

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    Actually I tint the primer with the top coat color...
     
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