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  1. #1
    Join Date
    13th February 2018
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    OC
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    Bondo Spot Putty?

    I see people talk about Bondo Spot Putty in a tube.

    Are people referring to the Bondo 907 Glazing & Spot Putty or the Bondo 801 Professional Glazing & Spot Putty?

    Thanks in advance.


  2. #2
    Join Date
    15th September 2009
    Location
    Silverton, Oregon
    Posts
    1,046
    I have the 907, but my suspicion is that the 801 would probably be fine as well.


    Dan Feller
    Silver Crest Rocket Club

  3. #3
    Join Date
    7th July 2013
    Location
    Toronto
    Posts
    3,629
    I also use 907. I don't have any experience with other products as I have not had a reason to use anything other than 907 for minor filling.
    Michael Pitfield
    TRA 14579 L2
    NAPAS BoD
    URRG
    MARS
    CRC

  4. #4
    Join Date
    22nd January 2009
    Location
    Plano, TX
    Posts
    3,341
    907

    Click image for larger version. 

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  5. #5
    Join Date
    13th October 2014
    Location
    SouthEastern, WA
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    I use the 907 as well, iirc the professional is a two part type. The 907 is a high solids lacquer base I believe.
    Rich

    NAR# 99154

    L3-4x upscale Estes Cherokee-D- AT M1297W 5/28/2016 http://www.rocketryforum.com/showthr...r-rharshberger

    TriCities Rocketeers NAR section# 736 http://www.tricitiesrocketeers.org/

  6. #6
    Join Date
    6th June 2011
    Location
    San Diego, CA
    Posts
    906
    801 is a completely different animal...a 3 oz tube of the same 2-part Bondo filler that is also sold in much larger cans. It's a catalyzed polyester resin that cures very rapidly (3-5 mins working time). It's your friend if you're doing serious fiberglass work that may need some amount of fairing and leveling. If you need it, you're likely to need more than a 3oz tube. I usually get the pint cans...used about half a can glassing out a Madcow BOMARC. Unlike the lacquer based spot putty, the 2-part stuff does not shrink and can be used in much thicker layers where the spot putty would take a really long time to dry.
    Dave Cook
    NAR 21953 L3 - TRA 1108 - DART San Diego

  7. #7
    Join Date
    13th February 2018
    Location
    OC
    Posts
    120
    Thanks everyone.

    I definitely don't need the two part. I'm just cleaning up the BT where I hacked off the launch lugs.

    A Pep Boys on the way home has it.

  8. #8
    Join Date
    7th July 2013
    Location
    Toronto
    Posts
    3,629
    Make sure you use it in a well ventilated area, this stuff will make you dizzy.
    Michael Pitfield
    TRA 14579 L2
    NAPAS BoD
    URRG
    MARS
    CRC

  9. #9
    Join Date
    13th February 2018
    Location
    OC
    Posts
    120
    So I really like this Bondo spot putty. Easy to use. Fast to dry. Sands really nicely. Used an old visa gift card with no money left on it as a scraper/shaper.

    My opinions thus far are all with workability. Nothing on durability.

    Is there a reason (other than the fumes) not to use this spot putty to fill spirals in cardboard tubes?

  10. #10
    Join Date
    3rd March 2018
    Location
    Central Colorado
    Posts
    220
    Quote Originally Posted by samb View Post
    907

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    That's bad ass... name that one "red oxide"!
    John

    In Process: X-Wing Alpha Build Thread

  11. #11
    Join Date
    13th February 2018
    Location
    OC
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    120
    Quote Originally Posted by OC_Rocket_Man View Post
    So I really like this Bondo spot putty. Easy to use. Fast to dry. Sands really nicely. Used an old visa gift card with no money left on it as a scraper/shaper.

    My opinions thus far are all with workability. Nothing on durability.

    Is there a reason (other than the fumes) not to use this spot putty to fill spirals in cardboard tubes?
    Bump?

  12. #12
    Join Date
    23rd July 2011
    Location
    Butte, MT
    Posts
    2,747
    Quote Originally Posted by OC_Rocket_Man View Post
    So I really like this Bondo spot putty. Easy to use. Fast to dry. Sands really nicely. Used an old visa gift card with no money left on it as a scraper/shaper.

    My opinions thus far are all with workability. Nothing on durability.

    Is there a reason (other than the fumes) not to use this spot putty to fill spirals in cardboard tubes?
    No
    Steve
    Steve Shannon
    L3CC, TAP, Director, Tripoli Rocketry Association

  13. #13
    Join Date
    25th February 2014
    Posts
    587
    Quote Originally Posted by OC_Rocket_Man View Post

    Is there a reason (other than the fumes) not to use this spot putty to fill spirals in cardboard tubes?
    no reason not to. it may require longer dry time as the putty usually skins over then whats underneath still has to dry.
    plus since it dries instead of cure( 2 part putties cure), it might shrink requiring a second application.

  14. #14
    Join Date
    20th April 2012
    Location
    Fredericksburg VA
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    1,684
    Quote Originally Posted by OC_Rocket_Man View Post
    So I really like this Bondo spot putty. Easy to use. Fast to dry. Sands really nicely. Used an old visa gift card with no money left on it as a scraper/shaper.

    My opinions thus far are all with workability. Nothing on durability.

    Is there a reason (other than the fumes) not to use this spot putty to fill spirals in cardboard tubes?
    I have used Bondo putty to fill spirals, but in my opinion thinned CWF is better for that.
    NAR Level 3 #96210

  15. #15
    Join Date
    15th September 2009
    Location
    Silverton, Oregon
    Posts
    1,046
    I recently tried a new (to me) method of filling spirals. I applied spot putty to the spirals straight from the tube, doing a few inches at a time. After applying it I immediately wiped off the excess with a paper towel. It seemed to work really well, filling the groove but leaving little excess to sand off

    Dan Feller
    Silver Crest Rocket Club

  16. #16
    Join Date
    21st September 2017
    Location
    NY/NJ
    Posts
    364
    Quote Originally Posted by mpitfield View Post
    I also use 907. I don't have any experience with other products as I have not had a reason to use anything other than 907 for minor filling.
    +1 on 907.

    Quote Originally Posted by RocketFeller View Post
    I recently tried a new (to me) method of filling spirals. I applied spot putty to the spirals straight from the tube, doing a few inches at a time. After applying it I immediately wiped off the excess with a paper towel. It seemed to work really well, filling the groove but leaving little excess to sand off
    Yep, and if you want to expedite the process, a few minutes with a hair dryer fast-forwards you to the sanding stage in 5-10 minutes.
    FWIW, I fill all imperfections (spirals, balsa grain, etc) in one pass, then hair-dry it, then sand it in 1-2-3 sequence.

    a

    __
    Radrocketeers.org NAR L2

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